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Finding the Fourth Proportional to 347,718.70, 521,602.35 and 137,329.30

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Solution

The fourth proportional to 347,718.70, 521,602.35 and 137,329.30 is: 206,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,718.70 : 521,602.35 = 137,329.30 : x
  2. Step 2: Convert to fraction form
    347,718.70/521,602.35 = 137,329.30/x
  3. Step 3: Cross multiply
    347,718.70x = 521,602.35 × 137,329.30
  4. Step 4: Simplify right side
    347,718.70x = 71,631,285,603.86
  5. Step 5: Solve for x
    x = 71,631,285,603.86/347,718.70
  6. Step 6: Final answer
    x = 206,003.55

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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.