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Finding the Fourth Proportional to 521,332.92, 781,985.70 and 166,368.60

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Solution

The fourth proportional to 521,332.92, 781,985.70 and 166,368.60 is: 249,548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,332.92 : 781,985.70 = 166,368.60 : x
  2. Step 2: Convert to fraction form
    521,332.92/781,985.70 = 166,368.60/x
  3. Step 3: Cross multiply
    521,332.92x = 781,985.70 × 166,368.60
  4. Step 4: Simplify right side
    521,332.92x = 130,097,866,129.02
  5. Step 5: Solve for x
    x = 130,097,866,129.02/521,332.92
  6. Step 6: Final answer
    x = 249,548.53

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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.