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Finding the Fourth Proportional to 258,551.68, 387,836 and 71,547.52

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Solution

The fourth proportional to 258,551.68, 387,836 and 71,547.52 is: 107,323.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,551.68 : 387,836 = 71,547.52 : x
  2. Step 2: Convert to fraction form
    258,551.68/387,836 = 71,547.52/x
  3. Step 3: Cross multiply
    258,551.68x = 387,836 × 71,547.52
  4. Step 4: Simplify right side
    258,551.68x = 27,748,703,966.72
  5. Step 5: Solve for x
    x = 27,748,703,966.72/258,551.68
  6. Step 6: Final answer
    x = 107,323.63

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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.