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Finding the Fourth Proportional to 215,354.34, 297,199.53 and 130,479.30

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Solution

The fourth proportional to 215,354.34, 297,199.53 and 130,479.30 is: 180,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,354.34 : 297,199.53 = 130,479.30 : x
  2. Step 2: Convert to fraction form
    215,354.34/297,199.53 = 130,479.30/x
  3. Step 3: Cross multiply
    215,354.34x = 297,199.53 × 130,479.30
  4. Step 4: Simplify right side
    215,354.34x = 38,778,386,634.73
  5. Step 5: Solve for x
    x = 38,778,386,634.73/215,354.34
  6. Step 6: Final answer
    x = 180,067.82

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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.