Home / 282,920.15-390,422.03-155,595.76

Finding the Fourth Proportional to 282,920.15, 390,422.03 and 155,595.76

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Solution

The fourth proportional to 282,920.15, 390,422.03 and 155,595.76 is: 214,717.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,920.15 : 390,422.03 = 155,595.76 : x
  2. Step 2: Convert to fraction form
    282,920.15/390,422.03 = 155,595.76/x
  3. Step 3: Cross multiply
    282,920.15x = 390,422.03 × 155,595.76
  4. Step 4: Simplify right side
    282,920.15x = 60,748,010,724.56
  5. Step 5: Solve for x
    x = 60,748,010,724.56/282,920.15
  6. Step 6: Final answer
    x = 214,717.86

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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.