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Finding the Fourth Proportional to 402,686.12, 604,015.20 and 103,169.18

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Solution

The fourth proportional to 402,686.12, 604,015.20 and 103,169.18 is: 154,750.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,686.12 : 604,015.20 = 103,169.18 : x
  2. Step 2: Convert to fraction form
    402,686.12/604,015.20 = 103,169.18/x
  3. Step 3: Cross multiply
    402,686.12x = 604,015.20 × 103,169.18
  4. Step 4: Simplify right side
    402,686.12x = 62,315,752,891.54
  5. Step 5: Solve for x
    x = 62,315,752,891.54/402,686.12
  6. Step 6: Final answer
    x = 154,750.19

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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.