Home / 487,979.40-732,089.10-168,136.20

Finding the Fourth Proportional to 487,979.40, 732,089.10 and 168,136.20

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Solution

The fourth proportional to 487,979.40, 732,089.10 and 168,136.20 is: 252,245.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,979.40 : 732,089.10 = 168,136.20 : x
  2. Step 2: Convert to fraction form
    487,979.40/732,089.10 = 168,136.20/x
  3. Step 3: Cross multiply
    487,979.40x = 732,089.10 × 168,136.20
  4. Step 4: Simplify right side
    487,979.40x = 123,090,679,335.42
  5. Step 5: Solve for x
    x = 123,090,679,335.42/487,979.40
  6. Step 6: Final answer
    x = 252,245.65

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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.