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Finding the Fourth Proportional to 423,509.26, 635,272.08 and 103,663.93

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Solution

The fourth proportional to 423,509.26, 635,272.08 and 103,663.93 is: 155,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,509.26 : 635,272.08 = 103,663.93 : x
  2. Step 2: Convert to fraction form
    423,509.26/635,272.08 = 103,663.93/x
  3. Step 3: Cross multiply
    423,509.26x = 635,272.08 × 103,663.93
  4. Step 4: Simplify right side
    423,509.26x = 65,854,800,432.07
  5. Step 5: Solve for x
    x = 65,854,800,432.07/423,509.26
  6. Step 6: Final answer
    x = 155,497.90

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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.