Home / 521,051.20-781,503.90-166,101.10

Finding the Fourth Proportional to 521,051.20, 781,503.90 and 166,101.10

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Solution

The fourth proportional to 521,051.20, 781,503.90 and 166,101.10 is: 249,128.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,051.20 : 781,503.90 = 166,101.10 : x
  2. Step 2: Convert to fraction form
    521,051.20/781,503.90 = 166,101.10/x
  3. Step 3: Cross multiply
    521,051.20x = 781,503.90 × 166,101.10
  4. Step 4: Simplify right side
    521,051.20x = 129,808,657,444.29
  5. Step 5: Solve for x
    x = 129,808,657,444.29/521,051.20
  6. Step 6: Final answer
    x = 249,128.41

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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.