Home / 487,981.40-732,092.10-168,138.20

Finding the Fourth Proportional to 487,981.40, 732,092.10 and 168,138.20

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Solution

The fourth proportional to 487,981.40, 732,092.10 and 168,138.20 is: 252,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,981.40 : 732,092.10 = 168,138.20 : x
  2. Step 2: Convert to fraction form
    487,981.40/732,092.10 = 168,138.20/x
  3. Step 3: Cross multiply
    487,981.40x = 732,092.10 × 168,138.20
  4. Step 4: Simplify right side
    487,981.40x = 123,092,647,928.22
  5. Step 5: Solve for x
    x = 123,092,647,928.22/487,981.40
  6. Step 6: Final answer
    x = 252,248.65

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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.