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Finding the Fourth Proportional to 215,708.49, 297,755.87 and 130,823.73

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Solution

The fourth proportional to 215,708.49, 297,755.87 and 130,823.73 is: 180,584.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,708.49 : 297,755.87 = 130,823.73 : x
  2. Step 2: Convert to fraction form
    215,708.49/297,755.87 = 130,823.73/x
  3. Step 3: Cross multiply
    215,708.49x = 297,755.87 × 130,823.73
  4. Step 4: Simplify right side
    215,708.49x = 38,953,532,888.68
  5. Step 5: Solve for x
    x = 38,953,532,888.68/215,708.49
  6. Step 6: Final answer
    x = 180,584.14

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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.