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Finding the Fourth Proportional to 285,353.55, 392,891.58 and 242,243.73

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Solution

The fourth proportional to 285,353.55, 392,891.58 and 242,243.73 is: 333,535.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,353.55 : 392,891.58 = 242,243.73 : x
  2. Step 2: Convert to fraction form
    285,353.55/392,891.58 = 242,243.73/x
  3. Step 3: Cross multiply
    285,353.55x = 392,891.58 × 242,243.73
  4. Step 4: Simplify right side
    285,353.55x = 95,175,521,824.79
  5. Step 5: Solve for x
    x = 95,175,521,824.79/285,353.55
  6. Step 6: Final answer
    x = 333,535.44

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Double scale
Find fourth proportional to 285,354.55, 392,892.96 and 242,244.73
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1.5x scale

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.