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Finding the Fourth Proportional to 347,155.11, 478,881.12 and 201,944.55

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Solution

The fourth proportional to 347,155.11, 478,881.12 and 201,944.55 is: 278,571.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,155.11 : 478,881.12 = 201,944.55 : x
  2. Step 2: Convert to fraction form
    347,155.11/478,881.12 = 201,944.55/x
  3. Step 3: Cross multiply
    347,155.11x = 478,881.12 × 201,944.55
  4. Step 4: Simplify right side
    347,155.11x = 96,707,432,281.90
  5. Step 5: Solve for x
    x = 96,707,432,281.90/347,155.11
  6. Step 6: Final answer
    x = 278,571.25

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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.