Home / 309,920.68-464,837.10-99,531.28

Finding the Fourth Proportional to 309,920.68, 464,837.10 and 99,531.28

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Solution

The fourth proportional to 309,920.68, 464,837.10 and 99,531.28 is: 149,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,920.68 : 464,837.10 = 99,531.28 : x
  2. Step 2: Convert to fraction form
    309,920.68/464,837.10 = 99,531.28/x
  3. Step 3: Cross multiply
    309,920.68x = 464,837.10 × 99,531.28
  4. Step 4: Simplify right side
    309,920.68x = 46,265,831,554.49
  5. Step 5: Solve for x
    x = 46,265,831,554.49/309,920.68
  6. Step 6: Final answer
    x = 149,282.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.