Home / 317,415.38-438,018.18-174,172.28

Finding the Fourth Proportional to 317,415.38, 438,018.18 and 174,172.28

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Solution

The fourth proportional to 317,415.38, 438,018.18 and 174,172.28 is: 240,349.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,415.38 : 438,018.18 = 174,172.28 : x
  2. Step 2: Convert to fraction form
    317,415.38/438,018.18 = 174,172.28/x
  3. Step 3: Cross multiply
    317,415.38x = 438,018.18 × 174,172.28
  4. Step 4: Simplify right side
    317,415.38x = 76,290,625,092.05
  5. Step 5: Solve for x
    x = 76,290,625,092.05/317,415.38
  6. Step 6: Final answer
    x = 240,349.49

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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.