Home / 429,743.40-644,616.90-145,436.19

Finding the Fourth Proportional to 429,743.40, 644,616.90 and 145,436.19

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Solution

The fourth proportional to 429,743.40, 644,616.90 and 145,436.19 is: 218,154.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,743.40 : 644,616.90 = 145,436.19 : x
  2. Step 2: Convert to fraction form
    429,743.40/644,616.90 = 145,436.19/x
  3. Step 3: Cross multiply
    429,743.40x = 644,616.90 × 145,436.19
  4. Step 4: Simplify right side
    429,743.40x = 93,750,625,945.61
  5. Step 5: Solve for x
    x = 93,750,625,945.61/429,743.40
  6. Step 6: Final answer
    x = 218,154.89

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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.