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Finding the Fourth Proportional to 315,799.64, 473,731.02 and 91,165.56

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Solution

The fourth proportional to 315,799.64, 473,731.02 and 91,165.56 is: 136,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,799.64 : 473,731.02 = 91,165.56 : x
  2. Step 2: Convert to fraction form
    315,799.64/473,731.02 = 91,165.56/x
  3. Step 3: Cross multiply
    315,799.64x = 473,731.02 × 91,165.56
  4. Step 4: Simplify right side
    315,799.64x = 43,187,953,727.67
  5. Step 5: Solve for x
    x = 43,187,953,727.67/315,799.64
  6. Step 6: Final answer
    x = 136,757.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.