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Finding the Fourth Proportional to 256,280.64, 353,833.56 and 229,376.49

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Solution

The fourth proportional to 256,280.64, 353,833.56 and 229,376.49 is: 316,688.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,280.64 : 353,833.56 = 229,376.49 : x
  2. Step 2: Convert to fraction form
    256,280.64/353,833.56 = 229,376.49/x
  3. Step 3: Cross multiply
    256,280.64x = 353,833.56 × 229,376.49
  4. Step 4: Simplify right side
    256,280.64x = 81,161,100,037.00
  5. Step 5: Solve for x
    x = 81,161,100,037.00/256,280.64
  6. Step 6: Final answer
    x = 316,688.38

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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.