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Finding the Fourth Proportional to 443,443.28, 611,951.74 and 242,239.28

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Solution

The fourth proportional to 443,443.28, 611,951.74 and 242,239.28 is: 334,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,443.28 : 611,951.74 = 242,239.28 : x
  2. Step 2: Convert to fraction form
    443,443.28/611,951.74 = 242,239.28/x
  3. Step 3: Cross multiply
    443,443.28x = 611,951.74 × 242,239.28
  4. Step 4: Simplify right side
    443,443.28x = 148,238,748,892.35
  5. Step 5: Solve for x
    x = 148,238,748,892.35/443,443.28
  6. Step 6: Final answer
    x = 334,290.21

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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.