Home / 315,870.48-435,902.04-172,632.24

Finding the Fourth Proportional to 315,870.48, 435,902.04 and 172,632.24

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Solution

The fourth proportional to 315,870.48, 435,902.04 and 172,632.24 is: 238,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,870.48 : 435,902.04 = 172,632.24 : x
  2. Step 2: Convert to fraction form
    315,870.48/435,902.04 = 172,632.24/x
  3. Step 3: Cross multiply
    315,870.48x = 435,902.04 × 172,632.24
  4. Step 4: Simplify right side
    315,870.48x = 75,250,745,585.77
  5. Step 5: Solve for x
    x = 75,250,745,585.77/315,870.48
  6. Step 6: Final answer
    x = 238,232.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.