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Finding the Fourth Proportional to 215,347.55, 297,284.60 and 134,819.78

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Solution

The fourth proportional to 215,347.55, 297,284.60 and 134,819.78 is: 186,117.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,347.55 : 297,284.60 = 134,819.78 : x
  2. Step 2: Convert to fraction form
    215,347.55/297,284.60 = 134,819.78/x
  3. Step 3: Cross multiply
    215,347.55x = 297,284.60 × 134,819.78
  4. Step 4: Simplify right side
    215,347.55x = 40,079,843,695.29
  5. Step 5: Solve for x
    x = 40,079,843,695.29/215,347.55
  6. Step 6: Final answer
    x = 186,117.02

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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.