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Finding the Fourth Proportional to 372,061.60, 513,438.96 and 202,300

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Solution

The fourth proportional to 372,061.60, 513,438.96 and 202,300 is: 279,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,061.60 : 513,438.96 = 202,300 : x
  2. Step 2: Convert to fraction form
    372,061.60/513,438.96 = 202,300/x
  3. Step 3: Cross multiply
    372,061.60x = 513,438.96 × 202,300
  4. Step 4: Simplify right side
    372,061.60x = 103,868,701,608
  5. Step 5: Solve for x
    x = 103,868,701,608/372,061.60
  6. Step 6: Final answer
    x = 279,170.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.