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Finding the Fourth Proportional to 215,387.10, 297,326.10 and 153,337.59

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Solution

The fourth proportional to 215,387.10, 297,326.10 and 153,337.59 is: 211,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,387.10 : 297,326.10 = 153,337.59 : x
  2. Step 2: Convert to fraction form
    215,387.10/297,326.10 = 153,337.59/x
  3. Step 3: Cross multiply
    215,387.10x = 297,326.10 × 153,337.59
  4. Step 4: Simplify right side
    215,387.10x = 45,591,267,618.10
  5. Step 5: Solve for x
    x = 45,591,267,618.10/215,387.10
  6. Step 6: Final answer
    x = 211,671.30

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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.