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Finding the Fourth Proportional to 250,337.84, 345,507 and 142,912.40

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Solution

The fourth proportional to 250,337.84, 345,507 and 142,912.40 is: 197,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,337.84 : 345,507 = 142,912.40 : x
  2. Step 2: Convert to fraction form
    250,337.84/345,507 = 142,912.40/x
  3. Step 3: Cross multiply
    250,337.84x = 345,507 × 142,912.40
  4. Step 4: Simplify right side
    250,337.84x = 49,377,234,586.80
  5. Step 5: Solve for x
    x = 49,377,234,586.80/250,337.84
  6. Step 6: Final answer
    x = 197,242.39

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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.