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Finding the Fourth Proportional to 443,422.08, 611,909.64 and 242,218.08

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Solution

The fourth proportional to 443,422.08, 611,909.64 and 242,218.08 is: 334,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,422.08 : 611,909.64 = 242,218.08 : x
  2. Step 2: Convert to fraction form
    443,422.08/611,909.64 = 242,218.08/x
  3. Step 3: Cross multiply
    443,422.08x = 611,909.64 × 242,218.08
  4. Step 4: Simplify right side
    443,422.08x = 148,215,578,134.29
  5. Step 5: Solve for x
    x = 148,215,578,134.29/443,422.08
  6. Step 6: Final answer
    x = 334,253.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.