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Finding the Fourth Proportional to 256,953.21, 385,455.48 and 88,451.24

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Solution

The fourth proportional to 256,953.21, 385,455.48 and 88,451.24 is: 132,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,953.21 : 385,455.48 = 88,451.24 : x
  2. Step 2: Convert to fraction form
    256,953.21/385,455.48 = 88,451.24/x
  3. Step 3: Cross multiply
    256,953.21x = 385,455.48 × 88,451.24
  4. Step 4: Simplify right side
    256,953.21x = 34,094,015,826.32
  5. Step 5: Solve for x
    x = 34,094,015,826.32/256,953.21
  6. Step 6: Final answer
    x = 132,685.70

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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.