Home / 429,589.02-644,385.24-145,281

Finding the Fourth Proportional to 429,589.02, 644,385.24 and 145,281

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Solution

The fourth proportional to 429,589.02, 644,385.24 and 145,281 is: 217,922.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,589.02 : 644,385.24 = 145,281 : x
  2. Step 2: Convert to fraction form
    429,589.02/644,385.24 = 145,281/x
  3. Step 3: Cross multiply
    429,589.02x = 644,385.24 × 145,281
  4. Step 4: Simplify right side
    429,589.02x = 93,616,932,052.44
  5. Step 5: Solve for x
    x = 93,616,932,052.44/429,589.02
  6. Step 6: Final answer
    x = 217,922.08

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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.