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Finding the Fourth Proportional to 261,027.70, 391,541.55 and 245,475.70

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Solution

The fourth proportional to 261,027.70, 391,541.55 and 245,475.70 is: 368,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,027.70 : 391,541.55 = 245,475.70 : x
  2. Step 2: Convert to fraction form
    261,027.70/391,541.55 = 245,475.70/x
  3. Step 3: Cross multiply
    261,027.70x = 391,541.55 × 245,475.70
  4. Step 4: Simplify right side
    261,027.70x = 96,113,936,065.34
  5. Step 5: Solve for x
    x = 96,113,936,065.34/261,027.70
  6. Step 6: Final answer
    x = 368,213.55

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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.