Home / 280,552,702.10-420,829,053.15-86,446,829.30

Finding the Fourth Proportional to 280,552,702.10, 420,829,053.15 and 86,446,829.30

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Solution

The fourth proportional to 280,552,702.10, 420,829,053.15 and 86,446,829.30 is: 129,670,243.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552,702.10 : 420,829,053.15 = 86,446,829.30 : x
  2. Step 2: Convert to fraction form
    280,552,702.10/420,829,053.15 = 86,446,829.30/x
  3. Step 3: Cross multiply
    280,552,702.10x = 420,829,053.15 × 86,446,829.30
  4. Step 4: Simplify right side
    280,552,702.10x = 36,379,337,322,138,672
  5. Step 5: Solve for x
    x = 36,379,337,322,138,672/280,552,702.10
  6. Step 6: Final answer
    x = 129,670,243.95

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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.