Home / 282,720.17-390,148.80-155,395.73

Finding the Fourth Proportional to 282,720.17, 390,148.80 and 155,395.73

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Solution

The fourth proportional to 282,720.17, 390,148.80 and 155,395.73 is: 214,443.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,720.17 : 390,148.80 = 155,395.73 : x
  2. Step 2: Convert to fraction form
    282,720.17/390,148.80 = 155,395.73/x
  3. Step 3: Cross multiply
    282,720.17x = 390,148.80 × 155,395.73
  4. Step 4: Simplify right side
    282,720.17x = 60,627,457,584.62
  5. Step 5: Solve for x
    x = 60,627,457,584.62/282,720.17
  6. Step 6: Final answer
    x = 214,443.34

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1.5x scale

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.