Home / 282,700.28-390,125.22-155,381.24

Finding the Fourth Proportional to 282,700.28, 390,125.22 and 155,381.24

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Solution

The fourth proportional to 282,700.28, 390,125.22 and 155,381.24 is: 214,425.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,700.28 : 390,125.22 = 155,381.24 : x
  2. Step 2: Convert to fraction form
    282,700.28/390,125.22 = 155,381.24/x
  3. Step 3: Cross multiply
    282,700.28x = 390,125.22 × 155,381.24
  4. Step 4: Simplify right side
    282,700.28x = 60,618,140,438.87
  5. Step 5: Solve for x
    x = 60,618,140,438.87/282,700.28
  6. Step 6: Final answer
    x = 214,425.47

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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.