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Finding the Fourth Proportional to 371,577.78, 557,514.36 and 118,897.20

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Solution

The fourth proportional to 371,577.78, 557,514.36 and 118,897.20 is: 178,393.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,577.78 : 557,514.36 = 118,897.20 : x
  2. Step 2: Convert to fraction form
    371,577.78/557,514.36 = 118,897.20/x
  3. Step 3: Cross multiply
    371,577.78x = 557,514.36 × 118,897.20
  4. Step 4: Simplify right side
    371,577.78x = 66,286,896,363.79
  5. Step 5: Solve for x
    x = 66,286,896,363.79/371,577.78
  6. Step 6: Final answer
    x = 178,393.06

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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.