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Finding the Fourth Proportional to 425,373.32, 638,059.98 and 109,805.63

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Solution

The fourth proportional to 425,373.32, 638,059.98 and 109,805.63 is: 164,708.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,373.32 : 638,059.98 = 109,805.63 : x
  2. Step 2: Convert to fraction form
    425,373.32/638,059.98 = 109,805.63/x
  3. Step 3: Cross multiply
    425,373.32x = 638,059.98 × 109,805.63
  4. Step 4: Simplify right side
    425,373.32x = 70,062,575,303.16
  5. Step 5: Solve for x
    x = 70,062,575,303.16/425,373.32
  6. Step 6: Final answer
    x = 164,708.44

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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.