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Finding the Fourth Proportional to 256,525.61, 354,002.73 and 143,348.36

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Solution

The fourth proportional to 256,525.61, 354,002.73 and 143,348.36 is: 197,819.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,525.61 : 354,002.73 = 143,348.36 : x
  2. Step 2: Convert to fraction form
    256,525.61/354,002.73 = 143,348.36/x
  3. Step 3: Cross multiply
    256,525.61x = 354,002.73 × 143,348.36
  4. Step 4: Simplify right side
    256,525.61x = 50,745,710,781.02
  5. Step 5: Solve for x
    x = 50,745,710,781.02/256,525.61
  6. Step 6: Final answer
    x = 197,819.28

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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.