Home / 423,185.28-634,775.04-107,639.36

Finding the Fourth Proportional to 423,185.28, 634,775.04 and 107,639.36

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Solution

The fourth proportional to 423,185.28, 634,775.04 and 107,639.36 is: 161,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,185.28 : 634,775.04 = 107,639.36 : x
  2. Step 2: Convert to fraction form
    423,185.28/634,775.04 = 107,639.36/x
  3. Step 3: Cross multiply
    423,185.28x = 634,775.04 × 107,639.36
  4. Step 4: Simplify right side
    423,185.28x = 68,326,779,049.57
  5. Step 5: Solve for x
    x = 68,326,779,049.57/423,185.28
  6. Step 6: Final answer
    x = 161,458.31

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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.