Home / 288,281,459.78-397,823,497.53-156,121,382.42

Finding the Fourth Proportional to 288,281,459.78, 397,823,497.53 and 156,121,382.42

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Solution

The fourth proportional to 288,281,459.78, 397,823,497.53 and 156,121,382.42 is: 215,444,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,281,459.78 : 397,823,497.53 = 156,121,382.42 : x
  2. Step 2: Convert to fraction form
    288,281,459.78/397,823,497.53 = 156,121,382.42/x
  3. Step 3: Cross multiply
    288,281,459.78x = 397,823,497.53 × 156,121,382.42
  4. Step 4: Simplify right side
    288,281,459.78x = 62,108,754,391,553,928
  5. Step 5: Solve for x
    x = 62,108,754,391,553,928/288,281,459.78
  6. Step 6: Final answer
    x = 215,444,844.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.