Home / 423,002.28-634,506.66-142,515.48

Finding the Fourth Proportional to 423,002.28, 634,506.66 and 142,515.48

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Solution

The fourth proportional to 423,002.28, 634,506.66 and 142,515.48 is: 213,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,002.28 : 634,506.66 = 142,515.48 : x
  2. Step 2: Convert to fraction form
    423,002.28/634,506.66 = 142,515.48/x
  3. Step 3: Cross multiply
    423,002.28x = 634,506.66 × 142,515.48
  4. Step 4: Simplify right side
    423,002.28x = 90,427,021,213.10
  5. Step 5: Solve for x
    x = 90,427,021,213.10/423,002.28
  6. Step 6: Final answer
    x = 213,774.31

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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.