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Finding the Fourth Proportional to 242,839.80, 364,259.70 and 219,220.20

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Solution

The fourth proportional to 242,839.80, 364,259.70 and 219,220.20 is: 328,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,839.80 : 364,259.70 = 219,220.20 : x
  2. Step 2: Convert to fraction form
    242,839.80/364,259.70 = 219,220.20/x
  3. Step 3: Cross multiply
    242,839.80x = 364,259.70 × 219,220.20
  4. Step 4: Simplify right side
    242,839.80x = 79,853,084,285.94
  5. Step 5: Solve for x
    x = 79,853,084,285.94/242,839.80
  6. Step 6: Final answer
    x = 328,830.30

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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.