Home / 345,026.28-517,535.10-120,386.28

Finding the Fourth Proportional to 345,026.28, 517,535.10 and 120,386.28

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Solution

The fourth proportional to 345,026.28, 517,535.10 and 120,386.28 is: 180,577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,026.28 : 517,535.10 = 120,386.28 : x
  2. Step 2: Convert to fraction form
    345,026.28/517,535.10 = 120,386.28/x
  3. Step 3: Cross multiply
    345,026.28x = 517,535.10 × 120,386.28
  4. Step 4: Simplify right side
    345,026.28x = 62,304,125,458.43
  5. Step 5: Solve for x
    x = 62,304,125,458.43/345,026.28
  6. Step 6: Final answer
    x = 180,577.91

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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.