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Finding the Fourth Proportional to 256,832.40, 385,133.40 and 99,008.40

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Solution

The fourth proportional to 256,832.40, 385,133.40 and 99,008.40 is: 148,468.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,832.40 : 385,133.40 = 99,008.40 : x
  2. Step 2: Convert to fraction form
    256,832.40/385,133.40 = 99,008.40/x
  3. Step 3: Cross multiply
    256,832.40x = 385,133.40 × 99,008.40
  4. Step 4: Simplify right side
    256,832.40x = 38,131,441,720.56
  5. Step 5: Solve for x
    x = 38,131,441,720.56/256,832.40
  6. Step 6: Final answer
    x = 148,468.19

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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.