Home / 312,401.13-431,112.96-169,161.60

Finding the Fourth Proportional to 312,401.13, 431,112.96 and 169,161.60

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Solution

The fourth proportional to 312,401.13, 431,112.96 and 169,161.60 is: 233,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,401.13 : 431,112.96 = 169,161.60 : x
  2. Step 2: Convert to fraction form
    312,401.13/431,112.96 = 169,161.60/x
  3. Step 3: Cross multiply
    312,401.13x = 431,112.96 × 169,161.60
  4. Step 4: Simplify right side
    312,401.13x = 72,927,758,094.34
  5. Step 5: Solve for x
    x = 72,927,758,094.34/312,401.13
  6. Step 6: Final answer
    x = 233,442.68

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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.