Home / 298,678,340.10-448,017,510.15-280,538,487.30

Finding the Fourth Proportional to 298,678,340.10, 448,017,510.15 and 280,538,487.30

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Solution

The fourth proportional to 298,678,340.10, 448,017,510.15 and 280,538,487.30 is: 420,807,730.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,678,340.10 : 448,017,510.15 = 280,538,487.30 : x
  2. Step 2: Convert to fraction form
    298,678,340.10/448,017,510.15 = 280,538,487.30/x
  3. Step 3: Cross multiply
    298,678,340.10x = 448,017,510.15 × 280,538,487.30
  4. Step 4: Simplify right side
    298,678,340.10x = 125,686,154,581,393,392
  5. Step 5: Solve for x
    x = 125,686,154,581,393,392/298,678,340.10
  6. Step 6: Final answer
    x = 420,807,730.95

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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.