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Finding the Fourth Proportional to 312,560.24, 431,335.16 and 169,320.24

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Solution

The fourth proportional to 312,560.24, 431,335.16 and 169,320.24 is: 233,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,560.24 : 431,335.16 = 169,320.24 : x
  2. Step 2: Convert to fraction form
    312,560.24/431,335.16 = 169,320.24/x
  3. Step 3: Cross multiply
    312,560.24x = 431,335.16 × 169,320.24
  4. Step 4: Simplify right side
    312,560.24x = 73,033,772,811.64
  5. Step 5: Solve for x
    x = 73,033,772,811.64/312,560.24
  6. Step 6: Final answer
    x = 233,663.03

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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.