Home / 261,044,562.78-391,214,114.01-99,398,318.94

Finding the Fourth Proportional to 261,044,562.78, 391,214,114.01 and 99,398,318.94

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Solution

The fourth proportional to 261,044,562.78, 391,214,114.01 and 99,398,318.94 is: 148,963,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,044,562.78 : 391,214,114.01 = 99,398,318.94 : x
  2. Step 2: Convert to fraction form
    261,044,562.78/391,214,114.01 = 99,398,318.94/x
  3. Step 3: Cross multiply
    261,044,562.78x = 391,214,114.01 × 99,398,318.94
  4. Step 4: Simplify right side
    261,044,562.78x = 38,886,025,278,195,504
  5. Step 5: Solve for x
    x = 38,886,025,278,195,504/261,044,562.78
  6. Step 6: Final answer
    x = 148,963,168.83

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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.