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Finding the Fourth Proportional to 425,360.89, 638,104.75 and 151,785.79

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Solution

The fourth proportional to 425,360.89, 638,104.75 and 151,785.79 is: 227,701.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,360.89 : 638,104.75 = 151,785.79 : x
  2. Step 2: Convert to fraction form
    425,360.89/638,104.75 = 151,785.79/x
  3. Step 3: Cross multiply
    425,360.89x = 638,104.75 × 151,785.79
  4. Step 4: Simplify right side
    425,360.89x = 96,855,234,041.16
  5. Step 5: Solve for x
    x = 96,855,234,041.16/425,360.89
  6. Step 6: Final answer
    x = 227,701.31

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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.