Home / 421,723.04-632,485.20-155,338.88

Finding the Fourth Proportional to 421,723.04, 632,485.20 and 155,338.88

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Solution

The fourth proportional to 421,723.04, 632,485.20 and 155,338.88 is: 232,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,723.04 : 632,485.20 = 155,338.88 : x
  2. Step 2: Convert to fraction form
    421,723.04/632,485.20 = 155,338.88/x
  3. Step 3: Cross multiply
    421,723.04x = 632,485.20 × 155,338.88
  4. Step 4: Simplify right side
    421,723.04x = 98,249,542,584.58
  5. Step 5: Solve for x
    x = 98,249,542,584.58/421,723.04
  6. Step 6: Final answer
    x = 232,971.72

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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.