Home / 310,298.25-428,217.26-172,490.12

Finding the Fourth Proportional to 310,298.25, 428,217.26 and 172,490.12

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Solution

The fourth proportional to 310,298.25, 428,217.26 and 172,490.12 is: 238,039.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,298.25 : 428,217.26 = 172,490.12 : x
  2. Step 2: Convert to fraction form
    310,298.25/428,217.26 = 172,490.12/x
  3. Step 3: Cross multiply
    310,298.25x = 428,217.26 × 172,490.12
  4. Step 4: Simplify right side
    310,298.25x = 73,863,243,559.93
  5. Step 5: Solve for x
    x = 73,863,243,559.93/310,298.25
  6. Step 6: Final answer
    x = 238,039.51

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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.