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Finding the Fourth Proportional to 312,559.82, 431,332.16 and 169,320.45

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Solution

The fourth proportional to 312,559.82, 431,332.16 and 169,320.45 is: 233,662.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,559.82 : 431,332.16 = 169,320.45 : x
  2. Step 2: Convert to fraction form
    312,559.82/431,332.16 = 169,320.45/x
  3. Step 3: Cross multiply
    312,559.82x = 431,332.16 × 169,320.45
  4. Step 4: Simplify right side
    312,559.82x = 73,033,354,584.07
  5. Step 5: Solve for x
    x = 73,033,354,584.07/312,559.82
  6. Step 6: Final answer
    x = 233,662.01

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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.