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Finding the Fourth Proportional to 242,521.20, 363,781.80 and 191,782.80

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Solution

The fourth proportional to 242,521.20, 363,781.80 and 191,782.80 is: 287,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,521.20 : 363,781.80 = 191,782.80 : x
  2. Step 2: Convert to fraction form
    242,521.20/363,781.80 = 191,782.80/x
  3. Step 3: Cross multiply
    242,521.20x = 363,781.80 × 191,782.80
  4. Step 4: Simplify right side
    242,521.20x = 69,767,092,193.04
  5. Step 5: Solve for x
    x = 69,767,092,193.04/242,521.20
  6. Step 6: Final answer
    x = 287,674.20

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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.