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Finding the Fourth Proportional to 256,841.52, 354,457.08 and 143,671.92

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Solution

The fourth proportional to 256,841.52, 354,457.08 and 143,671.92 is: 198,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,841.52 : 354,457.08 = 143,671.92 : x
  2. Step 2: Convert to fraction form
    256,841.52/354,457.08 = 143,671.92/x
  3. Step 3: Cross multiply
    256,841.52x = 354,457.08 × 143,671.92
  4. Step 4: Simplify right side
    256,841.52x = 50,925,529,241.19
  5. Step 5: Solve for x
    x = 50,925,529,241.19/256,841.52
  6. Step 6: Final answer
    x = 198,276.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.