Home / 256,575.20-384,279.60-131,770.40

Finding the Fourth Proportional to 256,575.20, 384,279.60 and 131,770.40

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Solution

The fourth proportional to 256,575.20, 384,279.60 and 131,770.40 is: 197,356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,575.20 : 384,279.60 = 131,770.40 : x
  2. Step 2: Convert to fraction form
    256,575.20/384,279.60 = 131,770.40/x
  3. Step 3: Cross multiply
    256,575.20x = 384,279.60 × 131,770.40
  4. Step 4: Simplify right side
    256,575.20x = 50,636,676,603.84
  5. Step 5: Solve for x
    x = 50,636,676,603.84/256,575.20
  6. Step 6: Final answer
    x = 197,356.08

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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.