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Finding the Fourth Proportional to 231,037.50, 318,832.71 and 125,053.50

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Solution

The fourth proportional to 231,037.50, 318,832.71 and 125,053.50 is: 172,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,037.50 : 318,832.71 = 125,053.50 : x
  2. Step 2: Convert to fraction form
    231,037.50/318,832.71 = 125,053.50/x
  3. Step 3: Cross multiply
    231,037.50x = 318,832.71 × 125,053.50
  4. Step 4: Simplify right side
    231,037.50x = 39,871,146,299.99
  5. Step 5: Solve for x
    x = 39,871,146,299.99/231,037.50
  6. Step 6: Final answer
    x = 172,574.35

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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.