Home / 429,925.20-644,657.40-180,325.20

Finding the Fourth Proportional to 429,925.20, 644,657.40 and 180,325.20

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Solution

The fourth proportional to 429,925.20, 644,657.40 and 180,325.20 is: 270,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,925.20 : 644,657.40 = 180,325.20 : x
  2. Step 2: Convert to fraction form
    429,925.20/644,657.40 = 180,325.20/x
  3. Step 3: Cross multiply
    429,925.20x = 644,657.40 × 180,325.20
  4. Step 4: Simplify right side
    429,925.20x = 116,247,974,586.48
  5. Step 5: Solve for x
    x = 116,247,974,586.48/429,925.20
  6. Step 6: Final answer
    x = 270,391.16

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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.