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Finding the Fourth Proportional to 359,129.90, 495,603.09 and 197,990.72

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Solution

The fourth proportional to 359,129.90, 495,603.09 and 197,990.72 is: 273,229.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,129.90 : 495,603.09 = 197,990.72 : x
  2. Step 2: Convert to fraction form
    359,129.90/495,603.09 = 197,990.72/x
  3. Step 3: Cross multiply
    359,129.90x = 495,603.09 × 197,990.72
  4. Step 4: Simplify right side
    359,129.90x = 98,124,814,420.36
  5. Step 5: Solve for x
    x = 98,124,814,420.36/359,129.90
  6. Step 6: Final answer
    x = 273,229.31

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1.5x scale

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.