Home / 256,732.18-354,290.43-143,555.20

Finding the Fourth Proportional to 256,732.18, 354,290.43 and 143,555.20

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Solution

The fourth proportional to 256,732.18, 354,290.43 and 143,555.20 is: 198,106.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,732.18 : 354,290.43 = 143,555.20 : x
  2. Step 2: Convert to fraction form
    256,732.18/354,290.43 = 143,555.20/x
  3. Step 3: Cross multiply
    256,732.18x = 354,290.43 × 143,555.20
  4. Step 4: Simplify right side
    256,732.18x = 50,860,233,536.74
  5. Step 5: Solve for x
    x = 50,860,233,536.74/256,732.18
  6. Step 6: Final answer
    x = 198,106.19

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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.