Home / 291,839.40-402,938.82-220,300.20

Finding the Fourth Proportional to 291,839.40, 402,938.82 and 220,300.20

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Solution

The fourth proportional to 291,839.40, 402,938.82 and 220,300.20 is: 304,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,839.40 : 402,938.82 = 220,300.20 : x
  2. Step 2: Convert to fraction form
    291,839.40/402,938.82 = 220,300.20/x
  3. Step 3: Cross multiply
    291,839.40x = 402,938.82 × 220,300.20
  4. Step 4: Simplify right side
    291,839.40x = 88,767,502,633.76
  5. Step 5: Solve for x
    x = 88,767,502,633.76/291,839.40
  6. Step 6: Final answer
    x = 304,165.59

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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.