Home / 423,280.68-634,882.14-142,800.36

Finding the Fourth Proportional to 423,280.68, 634,882.14 and 142,800.36

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Solution

The fourth proportional to 423,280.68, 634,882.14 and 142,800.36 is: 214,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,280.68 : 634,882.14 = 142,800.36 : x
  2. Step 2: Convert to fraction form
    423,280.68/634,882.14 = 142,800.36/x
  3. Step 3: Cross multiply
    423,280.68x = 634,882.14 × 142,800.36
  4. Step 4: Simplify right side
    423,280.68x = 90,661,398,149.57
  5. Step 5: Solve for x
    x = 90,661,398,149.57/423,280.68
  6. Step 6: Final answer
    x = 214,187.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.