Home / 312,521.08-431,278.26-169,281.52

Finding the Fourth Proportional to 312,521.08, 431,278.26 and 169,281.52

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Solution

The fourth proportional to 312,521.08, 431,278.26 and 169,281.52 is: 233,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,521.08 : 431,278.26 = 169,281.52 : x
  2. Step 2: Convert to fraction form
    312,521.08/431,278.26 = 169,281.52/x
  3. Step 3: Cross multiply
    312,521.08x = 431,278.26 × 169,281.52
  4. Step 4: Simplify right side
    312,521.08x = 73,007,439,395.76
  5. Step 5: Solve for x
    x = 73,007,439,395.76/312,521.08
  6. Step 6: Final answer
    x = 233,608.05

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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.