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Finding the Fourth Proportional to 261,348.40, 392,022.60 and 243,633.70

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Solution

The fourth proportional to 261,348.40, 392,022.60 and 243,633.70 is: 365,450.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,348.40 : 392,022.60 = 243,633.70 : x
  2. Step 2: Convert to fraction form
    261,348.40/392,022.60 = 243,633.70/x
  3. Step 3: Cross multiply
    261,348.40x = 392,022.60 × 243,633.70
  4. Step 4: Simplify right side
    261,348.40x = 95,509,916,521.62
  5. Step 5: Solve for x
    x = 95,509,916,521.62/261,348.40
  6. Step 6: Final answer
    x = 365,450.55

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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.