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Finding the Fourth Proportional to 256,609.20, 384,330.60 and 162,130.80

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Solution

The fourth proportional to 256,609.20, 384,330.60 and 162,130.80 is: 242,827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,609.20 : 384,330.60 = 162,130.80 : x
  2. Step 2: Convert to fraction form
    256,609.20/384,330.60 = 162,130.80/x
  3. Step 3: Cross multiply
    256,609.20x = 384,330.60 × 162,130.80
  4. Step 4: Simplify right side
    256,609.20x = 62,311,827,642.48
  5. Step 5: Solve for x
    x = 62,311,827,642.48/256,609.20
  6. Step 6: Final answer
    x = 242,827.72

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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.