Home / 429,965.12-645,206.88-149,679.20

Finding the Fourth Proportional to 429,965.12, 645,206.88 and 149,679.20

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Solution

The fourth proportional to 429,965.12, 645,206.88 and 149,679.20 is: 224,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,965.12 : 645,206.88 = 149,679.20 : x
  2. Step 2: Convert to fraction form
    429,965.12/645,206.88 = 149,679.20/x
  3. Step 3: Cross multiply
    429,965.12x = 645,206.88 × 149,679.20
  4. Step 4: Simplify right side
    429,965.12x = 96,574,049,632.90
  5. Step 5: Solve for x
    x = 96,574,049,632.90/429,965.12
  6. Step 6: Final answer
    x = 224,609.03

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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.