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Finding the Fourth Proportional to 352,669.80, 528,774.66 and 127,987.68

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Solution

The fourth proportional to 352,669.80, 528,774.66 and 127,987.68 is: 191,898.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,669.80 : 528,774.66 = 127,987.68 : x
  2. Step 2: Convert to fraction form
    352,669.80/528,774.66 = 127,987.68/x
  3. Step 3: Cross multiply
    352,669.80x = 528,774.66 × 127,987.68
  4. Step 4: Simplify right side
    352,669.80x = 67,676,641,976.19
  5. Step 5: Solve for x
    x = 67,676,641,976.19/352,669.80
  6. Step 6: Final answer
    x = 191,898.04

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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.