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Finding the Fourth Proportional to 292,943.80, 439,415.70 and 218,294.20

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Solution

The fourth proportional to 292,943.80, 439,415.70 and 218,294.20 is: 327,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,943.80 : 439,415.70 = 218,294.20 : x
  2. Step 2: Convert to fraction form
    292,943.80/439,415.70 = 218,294.20/x
  3. Step 3: Cross multiply
    292,943.80x = 439,415.70 × 218,294.20
  4. Step 4: Simplify right side
    292,943.80x = 95,921,898,698.94
  5. Step 5: Solve for x
    x = 95,921,898,698.94/292,943.80
  6. Step 6: Final answer
    x = 327,441.30

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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.