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Finding the Fourth Proportional to 423,698.65, 635,547.77 and 108,155.45

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Solution

The fourth proportional to 423,698.65, 635,547.77 and 108,155.45 is: 162,233.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,698.65 : 635,547.77 = 108,155.45 : x
  2. Step 2: Convert to fraction form
    423,698.65/635,547.77 = 108,155.45/x
  3. Step 3: Cross multiply
    423,698.65x = 635,547.77 × 108,155.45
  4. Step 4: Simplify right side
    423,698.65x = 68,737,956,514.52
  5. Step 5: Solve for x
    x = 68,737,956,514.52/423,698.65
  6. Step 6: Final answer
    x = 162,233.13

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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.