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Finding the Fourth Proportional to 258,068.84, 387,107.14 and 89,594.51

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Solution

The fourth proportional to 258,068.84, 387,107.14 and 89,594.51 is: 134,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,068.84 : 387,107.14 = 89,594.51 : x
  2. Step 2: Convert to fraction form
    258,068.84/387,107.14 = 89,594.51/x
  3. Step 3: Cross multiply
    258,068.84x = 387,107.14 × 89,594.51
  4. Step 4: Simplify right side
    258,068.84x = 34,682,672,366.28
  5. Step 5: Solve for x
    x = 34,682,672,366.28/258,068.84
  6. Step 6: Final answer
    x = 134,393.11

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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.