Home / 282,820.11-390,281.76-155,494.71

Finding the Fourth Proportional to 282,820.11, 390,281.76 and 155,494.71

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Solution

The fourth proportional to 282,820.11, 390,281.76 and 155,494.71 is: 214,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,820.11 : 390,281.76 = 155,494.71 : x
  2. Step 2: Convert to fraction form
    282,820.11/390,281.76 = 155,494.71/x
  3. Step 3: Cross multiply
    282,820.11x = 390,281.76 × 155,494.71
  4. Step 4: Simplify right side
    282,820.11x = 60,686,749,089.49
  5. Step 5: Solve for x
    x = 60,686,749,089.49/282,820.11
  6. Step 6: Final answer
    x = 214,577.21

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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.