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Finding the Fourth Proportional to 256,851, 354,454.38 and 143,676.18

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Solution

The fourth proportional to 256,851, 354,454.38 and 143,676.18 is: 198,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,851 : 354,454.38 = 143,676.18 : x
  2. Step 2: Convert to fraction form
    256,851/354,454.38 = 143,676.18/x
  3. Step 3: Cross multiply
    256,851x = 354,454.38 × 143,676.18
  4. Step 4: Simplify right side
    256,851x = 50,926,651,302.67
  5. Step 5: Solve for x
    x = 50,926,651,302.67/256,851
  6. Step 6: Final answer
    x = 198,273.13

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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.