Home / 423,004.28-634,509.66-142,517.48

Finding the Fourth Proportional to 423,004.28, 634,509.66 and 142,517.48

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Solution

The fourth proportional to 423,004.28, 634,509.66 and 142,517.48 is: 213,777.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,004.28 : 634,509.66 = 142,517.48 : x
  2. Step 2: Convert to fraction form
    423,004.28/634,509.66 = 142,517.48/x
  3. Step 3: Cross multiply
    423,004.28x = 634,509.66 × 142,517.48
  4. Step 4: Simplify right side
    423,004.28x = 90,428,717,778.86
  5. Step 5: Solve for x
    x = 90,428,717,778.86/423,004.28
  6. Step 6: Final answer
    x = 213,777.31

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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.