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Finding the Fourth Proportional to 425,807.76, 638,814.24 and 159,570.63

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Solution

The fourth proportional to 425,807.76, 638,814.24 and 159,570.63 is: 239,394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,807.76 : 638,814.24 = 159,570.63 : x
  2. Step 2: Convert to fraction form
    425,807.76/638,814.24 = 159,570.63/x
  3. Step 3: Cross multiply
    425,807.76x = 638,814.24 × 159,570.63
  4. Step 4: Simplify right side
    425,807.76x = 101,935,990,729.77
  5. Step 5: Solve for x
    x = 101,935,990,729.77/425,807.76
  6. Step 6: Final answer
    x = 239,394.39

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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.