Home / 315,215.65-434,975.02-171,972.55

Finding the Fourth Proportional to 315,215.65, 434,975.02 and 171,972.55

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Solution

The fourth proportional to 315,215.65, 434,975.02 and 171,972.55 is: 237,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,215.65 : 434,975.02 = 171,972.55 : x
  2. Step 2: Convert to fraction form
    315,215.65/434,975.02 = 171,972.55/x
  3. Step 3: Cross multiply
    315,215.65x = 434,975.02 × 171,972.55
  4. Step 4: Simplify right side
    315,215.65x = 74,803,763,375.70
  5. Step 5: Solve for x
    x = 74,803,763,375.70/315,215.65
  6. Step 6: Final answer
    x = 237,309.80

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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.