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Finding the Fourth Proportional to 403,220.10, 604,830.15 and 166,440.90

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Solution

The fourth proportional to 403,220.10, 604,830.15 and 166,440.90 is: 249,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,220.10 : 604,830.15 = 166,440.90 : x
  2. Step 2: Convert to fraction form
    403,220.10/604,830.15 = 166,440.90/x
  3. Step 3: Cross multiply
    403,220.10x = 604,830.15 × 166,440.90
  4. Step 4: Simplify right side
    403,220.10x = 100,668,474,513.14
  5. Step 5: Solve for x
    x = 100,668,474,513.14/403,220.10
  6. Step 6: Final answer
    x = 249,661.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.