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Finding the Fourth Proportional to 371,710.80, 557,128.80 and 194,126.40

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Solution

The fourth proportional to 371,710.80, 557,128.80 and 194,126.40 is: 290,961.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,710.80 : 557,128.80 = 194,126.40 : x
  2. Step 2: Convert to fraction form
    371,710.80/557,128.80 = 194,126.40/x
  3. Step 3: Cross multiply
    371,710.80x = 557,128.80 × 194,126.40
  4. Step 4: Simplify right side
    371,710.80x = 108,153,408,280.32
  5. Step 5: Solve for x
    x = 108,153,408,280.32/371,710.80
  6. Step 6: Final answer
    x = 290,961.17

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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.