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Finding the Fourth Proportional to 318,917.70, 478,376.55 and 177,200.10

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Solution

The fourth proportional to 318,917.70, 478,376.55 and 177,200.10 is: 265,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,917.70 : 478,376.55 = 177,200.10 : x
  2. Step 2: Convert to fraction form
    318,917.70/478,376.55 = 177,200.10/x
  3. Step 3: Cross multiply
    318,917.70x = 478,376.55 × 177,200.10
  4. Step 4: Simplify right side
    318,917.70x = 84,768,372,497.66
  5. Step 5: Solve for x
    x = 84,768,372,497.66/318,917.70
  6. Step 6: Final answer
    x = 265,800.15

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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.