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Finding the Fourth Proportional to 359,129.55, 495,601.98 and 197,990.28

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Solution

The fourth proportional to 359,129.55, 495,601.98 and 197,990.28 is: 273,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,129.55 : 495,601.98 = 197,990.28 : x
  2. Step 2: Convert to fraction form
    359,129.55/495,601.98 = 197,990.28/x
  3. Step 3: Cross multiply
    359,129.55x = 495,601.98 × 197,990.28
  4. Step 4: Simplify right side
    359,129.55x = 98,124,374,788.75
  5. Step 5: Solve for x
    x = 98,124,374,788.75/359,129.55
  6. Step 6: Final answer
    x = 273,228.35

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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.