Home / 258,333.79-387,508.02-71,345.29

Finding the Fourth Proportional to 258,333.79, 387,508.02 and 71,345.29

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Solution

The fourth proportional to 258,333.79, 387,508.02 and 71,345.29 is: 107,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,333.79 : 387,508.02 = 71,345.29 : x
  2. Step 2: Convert to fraction form
    258,333.79/387,508.02 = 71,345.29/x
  3. Step 3: Cross multiply
    258,333.79x = 387,508.02 × 71,345.29
  4. Step 4: Simplify right side
    258,333.79x = 27,646,872,064.23
  5. Step 5: Solve for x
    x = 27,646,872,064.23/258,333.79
  6. Step 6: Final answer
    x = 107,019.96

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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.