Home / 282,867.55-390,357.23-155,543.15

Finding the Fourth Proportional to 282,867.55, 390,357.23 and 155,543.15

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Solution

The fourth proportional to 282,867.55, 390,357.23 and 155,543.15 is: 214,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,867.55 : 390,357.23 = 155,543.15 : x
  2. Step 2: Convert to fraction form
    282,867.55/390,357.23 = 155,543.15/x
  3. Step 3: Cross multiply
    282,867.55x = 390,357.23 × 155,543.15
  4. Step 4: Simplify right side
    282,867.55x = 60,717,390,449.97
  5. Step 5: Solve for x
    x = 60,717,390,449.97/282,867.55
  6. Step 6: Final answer
    x = 214,649.54

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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.