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Finding the Fourth Proportional to 242,590.80, 363,886.20 and 217,221.60

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Solution

The fourth proportional to 242,590.80, 363,886.20 and 217,221.60 is: 325,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,590.80 : 363,886.20 = 217,221.60 : x
  2. Step 2: Convert to fraction form
    242,590.80/363,886.20 = 217,221.60/x
  3. Step 3: Cross multiply
    242,590.80x = 363,886.20 × 217,221.60
  4. Step 4: Simplify right side
    242,590.80x = 79,043,942,581.92
  5. Step 5: Solve for x
    x = 79,043,942,581.92/242,590.80
  6. Step 6: Final answer
    x = 325,832.40

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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.