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Finding the Fourth Proportional to 256,135.55, 359,114.65 and 256,135.55

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Solution

The fourth proportional to 256,135.55, 359,114.65 and 256,135.55 is: 359,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,135.55 : 359,114.65 = 256,135.55 : x
  2. Step 2: Convert to fraction form
    256,135.55/359,114.65 = 256,135.55/x
  3. Step 3: Cross multiply
    256,135.55x = 359,114.65 × 256,135.55
  4. Step 4: Simplify right side
    256,135.55x = 91,982,028,390.81
  5. Step 5: Solve for x
    x = 91,982,028,390.81/256,135.55
  6. Step 6: Final answer
    x = 359,114.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.