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Finding the Fourth Proportional to 258,770.70, 387,925.20 and 100,962.45

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Solution

The fourth proportional to 258,770.70, 387,925.20 and 100,962.45 is: 151,353.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,770.70 : 387,925.20 = 100,962.45 : x
  2. Step 2: Convert to fraction form
    258,770.70/387,925.20 = 100,962.45/x
  3. Step 3: Cross multiply
    258,770.70x = 387,925.20 × 100,962.45
  4. Step 4: Simplify right side
    258,770.70x = 39,165,878,608.74
  5. Step 5: Solve for x
    x = 39,165,878,608.74/258,770.70
  6. Step 6: Final answer
    x = 151,353.61

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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.