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Finding the Fourth Proportional to 342,868.20, 478,834.50 and 342,868.20

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Solution

The fourth proportional to 342,868.20, 478,834.50 and 342,868.20 is: 478,834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,868.20 : 478,834.50 = 342,868.20 : x
  2. Step 2: Convert to fraction form
    342,868.20/478,834.50 = 342,868.20/x
  3. Step 3: Cross multiply
    342,868.20x = 478,834.50 × 342,868.20
  4. Step 4: Simplify right side
    342,868.20x = 164,177,123,112.90
  5. Step 5: Solve for x
    x = 164,177,123,112.90/342,868.20
  6. Step 6: Final answer
    x = 478,834.50

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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.