Home / 279,875.07-419,947.59-137,643.19

Finding the Fourth Proportional to 279,875.07, 419,947.59 and 137,643.19

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Solution

The fourth proportional to 279,875.07, 419,947.59 and 137,643.19 is: 206,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,875.07 : 419,947.59 = 137,643.19 : x
  2. Step 2: Convert to fraction form
    279,875.07/419,947.59 = 137,643.19/x
  3. Step 3: Cross multiply
    279,875.07x = 419,947.59 × 137,643.19
  4. Step 4: Simplify right side
    279,875.07x = 57,802,925,920.41
  5. Step 5: Solve for x
    x = 57,802,925,920.41/279,875.07
  6. Step 6: Final answer
    x = 206,531.17

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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.