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Finding the Fourth Proportional to 425,417.24, 638,373.92 and 159,364.64

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Solution

The fourth proportional to 425,417.24, 638,373.92 and 159,364.64 is: 239,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,417.24 : 638,373.92 = 159,364.64 : x
  2. Step 2: Convert to fraction form
    425,417.24/638,373.92 = 159,364.64/x
  3. Step 3: Cross multiply
    425,417.24x = 638,373.92 × 159,364.64
  4. Step 4: Simplify right side
    425,417.24x = 101,734,229,946.19
  5. Step 5: Solve for x
    x = 101,734,229,946.19/425,417.24
  6. Step 6: Final answer
    x = 239,139.89

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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.