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Finding the Fourth Proportional to 242,035.20, 363,117.60 and 215,920.80

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Solution

The fourth proportional to 242,035.20, 363,117.60 and 215,920.80 is: 323,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,035.20 : 363,117.60 = 215,920.80 : x
  2. Step 2: Convert to fraction form
    242,035.20/363,117.60 = 215,920.80/x
  3. Step 3: Cross multiply
    242,035.20x = 363,117.60 × 215,920.80
  4. Step 4: Simplify right side
    242,035.20x = 78,404,642,686.08
  5. Step 5: Solve for x
    x = 78,404,642,686.08/242,035.20
  6. Step 6: Final answer
    x = 323,939.01

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1.5x scale

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.