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Finding the Fourth Proportional to 250,292.75, 345,428.78 and 142,878.94

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Solution

The fourth proportional to 250,292.75, 345,428.78 and 142,878.94 is: 197,187.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,292.75 : 345,428.78 = 142,878.94 : x
  2. Step 2: Convert to fraction form
    250,292.75/345,428.78 = 142,878.94/x
  3. Step 3: Cross multiply
    250,292.75x = 345,428.78 × 142,878.94
  4. Step 4: Simplify right side
    250,292.75x = 49,354,497,931.89
  5. Step 5: Solve for x
    x = 49,354,497,931.89/250,292.75
  6. Step 6: Final answer
    x = 197,187.09

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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.