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Finding the Fourth Proportional to 313,036.61, 431,987.46 and 169,794.59

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Solution

The fourth proportional to 313,036.61, 431,987.46 and 169,794.59 is: 234,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,036.61 : 431,987.46 = 169,794.59 : x
  2. Step 2: Convert to fraction form
    313,036.61/431,987.46 = 169,794.59/x
  3. Step 3: Cross multiply
    313,036.61x = 431,987.46 × 169,794.59
  4. Step 4: Simplify right side
    313,036.61x = 73,349,133,655.84
  5. Step 5: Solve for x
    x = 73,349,133,655.84/313,036.61
  6. Step 6: Final answer
    x = 234,314.87

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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.