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Finding the Fourth Proportional to 258,244.52, 356,419.80 and 215,155.76

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Solution

The fourth proportional to 258,244.52, 356,419.80 and 215,155.76 is: 296,950.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,244.52 : 356,419.80 = 215,155.76 : x
  2. Step 2: Convert to fraction form
    258,244.52/356,419.80 = 215,155.76/x
  3. Step 3: Cross multiply
    258,244.52x = 356,419.80 × 215,155.76
  4. Step 4: Simplify right side
    258,244.52x = 76,685,772,948.05
  5. Step 5: Solve for x
    x = 76,685,772,948.05/258,244.52
  6. Step 6: Final answer
    x = 296,950.24

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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.