Home / 371,900,347.95-557,678,138.19-138,668,437

Finding the Fourth Proportional to 371,900,347.95, 557,678,138.19 and 138,668,437

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Solution

The fourth proportional to 371,900,347.95, 557,678,138.19 and 138,668,437 is: 207,938,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,900,347.95 : 557,678,138.19 = 138,668,437 : x
  2. Step 2: Convert to fraction form
    371,900,347.95/557,678,138.19 = 138,668,437/x
  3. Step 3: Cross multiply
    371,900,347.95x = 557,678,138.19 × 138,668,437
  4. Step 4: Simplify right side
    371,900,347.95x = 77,332,355,771,877,312
  5. Step 5: Solve for x
    x = 77,332,355,771,877,312/371,900,347.95
  6. Step 6: Final answer
    x = 207,938,379.72

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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.