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Finding the Fourth Proportional to 261,347.40, 392,021.10 and 243,632.70

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Solution

The fourth proportional to 261,347.40, 392,021.10 and 243,632.70 is: 365,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,347.40 : 392,021.10 = 243,632.70 : x
  2. Step 2: Convert to fraction form
    261,347.40/392,021.10 = 243,632.70/x
  3. Step 3: Cross multiply
    261,347.40x = 392,021.10 × 243,632.70
  4. Step 4: Simplify right side
    261,347.40x = 95,509,159,049.97
  5. Step 5: Solve for x
    x = 95,509,159,049.97/261,347.40
  6. Step 6: Final answer
    x = 365,449.05

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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.