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Finding the Fourth Proportional to 310,037.91, 427,895.10 and 172,247.73

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Solution

The fourth proportional to 310,037.91, 427,895.10 and 172,247.73 is: 237,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,037.91 : 427,895.10 = 172,247.73 : x
  2. Step 2: Convert to fraction form
    310,037.91/427,895.10 = 172,247.73/x
  3. Step 3: Cross multiply
    310,037.91x = 427,895.10 × 172,247.73
  4. Step 4: Simplify right side
    310,037.91x = 73,703,959,653.12
  5. Step 5: Solve for x
    x = 73,703,959,653.12/310,037.91
  6. Step 6: Final answer
    x = 237,725.64

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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.