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Finding the Fourth Proportional to 543,055.04, 814,691.80 and 188,061.20

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Solution

The fourth proportional to 543,055.04, 814,691.80 and 188,061.20 is: 282,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,055.04 : 814,691.80 = 188,061.20 : x
  2. Step 2: Convert to fraction form
    543,055.04/814,691.80 = 188,061.20/x
  3. Step 3: Cross multiply
    543,055.04x = 814,691.80 × 188,061.20
  4. Step 4: Simplify right side
    543,055.04x = 153,211,917,538.16
  5. Step 5: Solve for x
    x = 153,211,917,538.16/543,055.04
  6. Step 6: Final answer
    x = 282,129.63

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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.