Home / 430,256.47-645,425.18-126,650.83

Finding the Fourth Proportional to 430,256.47, 645,425.18 and 126,650.83

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Solution

The fourth proportional to 430,256.47, 645,425.18 and 126,650.83 is: 189,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,256.47 : 645,425.18 = 126,650.83 : x
  2. Step 2: Convert to fraction form
    430,256.47/645,425.18 = 126,650.83/x
  3. Step 3: Cross multiply
    430,256.47x = 645,425.18 × 126,650.83
  4. Step 4: Simplify right side
    430,256.47x = 81,743,635,066.53
  5. Step 5: Solve for x
    x = 81,743,635,066.53/430,256.47
  6. Step 6: Final answer
    x = 189,988.16

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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.