Home / 282,720.68-390,149.48-155,396.24

Finding the Fourth Proportional to 282,720.68, 390,149.48 and 155,396.24

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Solution

The fourth proportional to 282,720.68, 390,149.48 and 155,396.24 is: 214,444.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,720.68 : 390,149.48 = 155,396.24 : x
  2. Step 2: Convert to fraction form
    282,720.68/390,149.48 = 155,396.24/x
  3. Step 3: Cross multiply
    282,720.68x = 390,149.48 × 155,396.24
  4. Step 4: Simplify right side
    282,720.68x = 60,627,762,229.96
  5. Step 5: Solve for x
    x = 60,627,762,229.96/282,720.68
  6. Step 6: Final answer
    x = 214,444.03

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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.