Home / 429,863.20-644,564.40-180,263.20

Finding the Fourth Proportional to 429,863.20, 644,564.40 and 180,263.20

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Solution

The fourth proportional to 429,863.20, 644,564.40 and 180,263.20 is: 270,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,863.20 : 644,564.40 = 180,263.20 : x
  2. Step 2: Convert to fraction form
    429,863.20/644,564.40 = 180,263.20/x
  3. Step 3: Cross multiply
    429,863.20x = 644,564.40 × 180,263.20
  4. Step 4: Simplify right side
    429,863.20x = 116,191,241,350.08
  5. Step 5: Solve for x
    x = 116,191,241,350.08/429,863.20
  6. Step 6: Final answer
    x = 270,298.18

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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.