Home / 256,574.20-384,278.10-131,769.40

Finding the Fourth Proportional to 256,574.20, 384,278.10 and 131,769.40

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Solution

The fourth proportional to 256,574.20, 384,278.10 and 131,769.40 is: 197,354.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,574.20 : 384,278.10 = 131,769.40 : x
  2. Step 2: Convert to fraction form
    256,574.20/384,278.10 = 131,769.40/x
  3. Step 3: Cross multiply
    256,574.20x = 384,278.10 × 131,769.40
  4. Step 4: Simplify right side
    256,574.20x = 50,636,094,670.14
  5. Step 5: Solve for x
    x = 50,636,094,670.14/256,574.20
  6. Step 6: Final answer
    x = 197,354.58

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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.