Home / 429,861.20-644,561.40-180,261.20

Finding the Fourth Proportional to 429,861.20, 644,561.40 and 180,261.20

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Solution

The fourth proportional to 429,861.20, 644,561.40 and 180,261.20 is: 270,295.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,861.20 : 644,561.40 = 180,261.20 : x
  2. Step 2: Convert to fraction form
    429,861.20/644,561.40 = 180,261.20/x
  3. Step 3: Cross multiply
    429,861.20x = 644,561.40 × 180,261.20
  4. Step 4: Simplify right side
    429,861.20x = 116,189,411,437.68
  5. Step 5: Solve for x
    x = 116,189,411,437.68/429,861.20
  6. Step 6: Final answer
    x = 270,295.18

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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.