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Finding the Fourth Proportional to 256,905.70, 385,358.55 and 246,408.10

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Solution

The fourth proportional to 256,905.70, 385,358.55 and 246,408.10 is: 369,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,905.70 : 385,358.55 = 246,408.10 : x
  2. Step 2: Convert to fraction form
    256,905.70/385,358.55 = 246,408.10/x
  3. Step 3: Cross multiply
    256,905.70x = 385,358.55 × 246,408.10
  4. Step 4: Simplify right side
    256,905.70x = 94,955,468,124.26
  5. Step 5: Solve for x
    x = 94,955,468,124.26/256,905.70
  6. Step 6: Final answer
    x = 369,612.15

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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.