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Finding the Fourth Proportional to 403,139.60, 604,928.10 and 166,506.20

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Solution

The fourth proportional to 403,139.60, 604,928.10 and 166,506.20 is: 249,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,139.60 : 604,928.10 = 166,506.20 : x
  2. Step 2: Convert to fraction form
    403,139.60/604,928.10 = 166,506.20/x
  3. Step 3: Cross multiply
    403,139.60x = 604,928.10 × 166,506.20
  4. Step 4: Simplify right side
    403,139.60x = 100,724,279,204.22
  5. Step 5: Solve for x
    x = 100,724,279,204.22/403,139.60
  6. Step 6: Final answer
    x = 249,849.63

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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.