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Finding the Fourth Proportional to 230,533.70, 318,128.99 and 127,167.64

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Solution

The fourth proportional to 230,533.70, 318,128.99 and 127,167.64 is: 175,487.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,533.70 : 318,128.99 = 127,167.64 : x
  2. Step 2: Convert to fraction form
    230,533.70/318,128.99 = 127,167.64/x
  3. Step 3: Cross multiply
    230,533.70x = 318,128.99 × 127,167.64
  4. Step 4: Simplify right side
    230,533.70x = 40,455,711,442.72
  5. Step 5: Solve for x
    x = 40,455,711,442.72/230,533.70
  6. Step 6: Final answer
    x = 175,487.19

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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.