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Finding the Fourth Proportional to 256,948.56, 385,431.30 and 88,467.12

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Solution

The fourth proportional to 256,948.56, 385,431.30 and 88,467.12 is: 132,703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,948.56 : 385,431.30 = 88,467.12 : x
  2. Step 2: Convert to fraction form
    256,948.56/385,431.30 = 88,467.12/x
  3. Step 3: Cross multiply
    256,948.56x = 385,431.30 × 88,467.12
  4. Step 4: Simplify right side
    256,948.56x = 34,097,997,068.86
  5. Step 5: Solve for x
    x = 34,097,997,068.86/256,948.56
  6. Step 6: Final answer
    x = 132,703.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.