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Finding the Fourth Proportional to 407,387.13, 611,104.04 and 107,859.93

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Solution

The fourth proportional to 407,387.13, 611,104.04 and 107,859.93 is: 161,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,387.13 : 611,104.04 = 107,859.93 : x
  2. Step 2: Convert to fraction form
    407,387.13/611,104.04 = 107,859.93/x
  3. Step 3: Cross multiply
    407,387.13x = 611,104.04 × 107,859.93
  4. Step 4: Simplify right side
    407,387.13x = 65,913,638,977.12
  5. Step 5: Solve for x
    x = 65,913,638,977.12/407,387.13
  6. Step 6: Final answer
    x = 161,796.08

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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.