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Finding the Fourth Proportional to 325,220.64, 487,830.96 and 214,386.72

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Solution

The fourth proportional to 325,220.64, 487,830.96 and 214,386.72 is: 321,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,220.64 : 487,830.96 = 214,386.72 : x
  2. Step 2: Convert to fraction form
    325,220.64/487,830.96 = 214,386.72/x
  3. Step 3: Cross multiply
    325,220.64x = 487,830.96 × 214,386.72
  4. Step 4: Simplify right side
    325,220.64x = 104,584,479,428.85
  5. Step 5: Solve for x
    x = 104,584,479,428.85/325,220.64
  6. Step 6: Final answer
    x = 321,580.08

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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.