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Finding the Fourth Proportional to 423,392.79, 635,083.67 and 103,547.43

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Solution

The fourth proportional to 423,392.79, 635,083.67 and 103,547.43 is: 155,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,392.79 : 635,083.67 = 103,547.43 : x
  2. Step 2: Convert to fraction form
    423,392.79/635,083.67 = 103,547.43/x
  3. Step 3: Cross multiply
    423,392.79x = 635,083.67 × 103,547.43
  4. Step 4: Simplify right side
    423,392.79x = 65,761,281,345.73
  5. Step 5: Solve for x
    x = 65,761,281,345.73/423,392.79
  6. Step 6: Final answer
    x = 155,319.79

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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.