Home / 282,815.22-390,275.03-155,489.84

Finding the Fourth Proportional to 282,815.22, 390,275.03 and 155,489.84

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Solution

The fourth proportional to 282,815.22, 390,275.03 and 155,489.84 is: 214,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,815.22 : 390,275.03 = 155,489.84 : x
  2. Step 2: Convert to fraction form
    282,815.22/390,275.03 = 155,489.84/x
  3. Step 3: Cross multiply
    282,815.22x = 390,275.03 × 155,489.84
  4. Step 4: Simplify right side
    282,815.22x = 60,683,799,241.87
  5. Step 5: Solve for x
    x = 60,683,799,241.87/282,815.22
  6. Step 6: Final answer
    x = 214,570.49

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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.