Home / 279,319.68-385,431.84-158,422.32

Finding the Fourth Proportional to 279,319.68, 385,431.84 and 158,422.32

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Solution

The fourth proportional to 279,319.68, 385,431.84 and 158,422.32 is: 218,606.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,319.68 : 385,431.84 = 158,422.32 : x
  2. Step 2: Convert to fraction form
    279,319.68/385,431.84 = 158,422.32/x
  3. Step 3: Cross multiply
    279,319.68x = 385,431.84 × 158,422.32
  4. Step 4: Simplify right side
    279,319.68x = 61,061,006,294.67
  5. Step 5: Solve for x
    x = 61,061,006,294.67/279,319.68
  6. Step 6: Final answer
    x = 218,606.17

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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.