Home / 381,845,490.10-572,768,235.15-139,476,901.30

Finding the Fourth Proportional to 381,845,490.10, 572,768,235.15 and 139,476,901.30

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Solution

The fourth proportional to 381,845,490.10, 572,768,235.15 and 139,476,901.30 is: 209,215,351.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,845,490.10 : 572,768,235.15 = 139,476,901.30 : x
  2. Step 2: Convert to fraction form
    381,845,490.10/572,768,235.15 = 139,476,901.30/x
  3. Step 3: Cross multiply
    381,845,490.10x = 572,768,235.15 × 139,476,901.30
  4. Step 4: Simplify right side
    381,845,490.10x = 79,887,938,601,791,744
  5. Step 5: Solve for x
    x = 79,887,938,601,791,744/381,845,490.10
  6. Step 6: Final answer
    x = 209,215,351.95

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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.