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Finding the Fourth Proportional to 256,801.30, 385,311.30 and 162,104.20

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Solution

The fourth proportional to 256,801.30, 385,311.30 and 162,104.20 is: 243,225.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,801.30 : 385,311.30 = 162,104.20 : x
  2. Step 2: Convert to fraction form
    256,801.30/385,311.30 = 162,104.20/x
  3. Step 3: Cross multiply
    256,801.30x = 385,311.30 × 162,104.20
  4. Step 4: Simplify right side
    256,801.30x = 62,460,580,037.46
  5. Step 5: Solve for x
    x = 62,460,580,037.46/256,801.30
  6. Step 6: Final answer
    x = 243,225.33

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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.