Home / 280,496,205.64-420,744,312.11-76,024,280.89

Finding the Fourth Proportional to 280,496,205.64, 420,744,312.11 and 76,024,280.89

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Solution

The fourth proportional to 280,496,205.64, 420,744,312.11 and 76,024,280.89 is: 114,036,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,496,205.64 : 420,744,312.11 = 76,024,280.89 : x
  2. Step 2: Convert to fraction form
    280,496,205.64/420,744,312.11 = 76,024,280.89/x
  3. Step 3: Cross multiply
    280,496,205.64x = 420,744,312.11 × 76,024,280.89
  4. Step 4: Simplify right side
    280,496,205.64x = 31,986,783,766,720,468
  5. Step 5: Solve for x
    x = 31,986,783,766,720,468/280,496,205.64
  6. Step 6: Final answer
    x = 114,036,422.32

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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.