Home / 315,271.65-435,085.38-172,039.55

Finding the Fourth Proportional to 315,271.65, 435,085.38 and 172,039.55

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Solution

The fourth proportional to 315,271.65, 435,085.38 and 172,039.55 is: 237,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,271.65 : 435,085.38 = 172,039.55 : x
  2. Step 2: Convert to fraction form
    315,271.65/435,085.38 = 172,039.55/x
  3. Step 3: Cross multiply
    315,271.65x = 435,085.38 × 172,039.55
  4. Step 4: Simplify right side
    315,271.65x = 74,851,894,074.49
  5. Step 5: Solve for x
    x = 74,851,894,074.49/315,271.65
  6. Step 6: Final answer
    x = 237,420.31

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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.