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Finding the Fourth Proportional to 381,903.31, 572,962.21 and 112,037.81

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Solution

The fourth proportional to 381,903.31, 572,962.21 and 112,037.81 is: 168,088.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,903.31 : 572,962.21 = 112,037.81 : x
  2. Step 2: Convert to fraction form
    381,903.31/572,962.21 = 112,037.81/x
  3. Step 3: Cross multiply
    381,903.31x = 572,962.21 × 112,037.81
  4. Step 4: Simplify right side
    381,903.31x = 64,193,430,660.97
  5. Step 5: Solve for x
    x = 64,193,430,660.97/381,903.31
  6. Step 6: Final answer
    x = 168,088.18

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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.