Home / 312,401.34-431,114.13-169,161.62

Finding the Fourth Proportional to 312,401.34, 431,114.13 and 169,161.62

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Solution

The fourth proportional to 312,401.34, 431,114.13 and 169,161.62 is: 233,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,401.34 : 431,114.13 = 169,161.62 : x
  2. Step 2: Convert to fraction form
    312,401.34/431,114.13 = 169,161.62/x
  3. Step 3: Cross multiply
    312,401.34x = 431,114.13 × 169,161.62
  4. Step 4: Simplify right side
    312,401.34x = 72,927,962,480.12
  5. Step 5: Solve for x
    x = 72,927,962,480.12/312,401.34
  6. Step 6: Final answer
    x = 233,443.18

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1.5x scale

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.