Home / 430,064.31-645,105.33-156,501.15

Finding the Fourth Proportional to 430,064.31, 645,105.33 and 156,501.15

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Solution

The fourth proportional to 430,064.31, 645,105.33 and 156,501.15 is: 234,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,064.31 : 645,105.33 = 156,501.15 : x
  2. Step 2: Convert to fraction form
    430,064.31/645,105.33 = 156,501.15/x
  3. Step 3: Cross multiply
    430,064.31x = 645,105.33 × 156,501.15
  4. Step 4: Simplify right side
    430,064.31x = 100,959,726,016.13
  5. Step 5: Solve for x
    x = 100,959,726,016.13/430,064.31
  6. Step 6: Final answer
    x = 234,754.95

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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.