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Finding the Fourth Proportional to 423,709.34, 635,565.03 and 103,862.64

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Solution

The fourth proportional to 423,709.34, 635,565.03 and 103,862.64 is: 155,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,709.34 : 635,565.03 = 103,862.64 : x
  2. Step 2: Convert to fraction form
    423,709.34/635,565.03 = 103,862.64/x
  3. Step 3: Cross multiply
    423,709.34x = 635,565.03 × 103,862.64
  4. Step 4: Simplify right side
    423,709.34x = 66,011,458,830.90
  5. Step 5: Solve for x
    x = 66,011,458,830.90/423,709.34
  6. Step 6: Final answer
    x = 155,794.20

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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.