Home / 429,939.66-645,001.20-145,620.24

Finding the Fourth Proportional to 429,939.66, 645,001.20 and 145,620.24

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Solution

The fourth proportional to 429,939.66, 645,001.20 and 145,620.24 is: 218,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,939.66 : 645,001.20 = 145,620.24 : x
  2. Step 2: Convert to fraction form
    429,939.66/645,001.20 = 145,620.24/x
  3. Step 3: Cross multiply
    429,939.66x = 645,001.20 × 145,620.24
  4. Step 4: Simplify right side
    429,939.66x = 93,925,229,544.29
  5. Step 5: Solve for x
    x = 93,925,229,544.29/429,939.66
  6. Step 6: Final answer
    x = 218,461.42

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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.