Home / 256,531.86-354,011.36-143,354.61

Finding the Fourth Proportional to 256,531.86, 354,011.36 and 143,354.61

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Solution

The fourth proportional to 256,531.86, 354,011.36 and 143,354.61 is: 197,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,531.86 : 354,011.36 = 143,354.61 : x
  2. Step 2: Convert to fraction form
    256,531.86/354,011.36 = 143,354.61/x
  3. Step 3: Cross multiply
    256,531.86x = 354,011.36 × 143,354.61
  4. Step 4: Simplify right side
    256,531.86x = 50,749,159,731.60
  5. Step 5: Solve for x
    x = 50,749,159,731.60/256,531.86
  6. Step 6: Final answer
    x = 197,827.90

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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.