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Finding the Fourth Proportional to 258,348.29, 387,389.59 and 116,071.62

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Solution

The fourth proportional to 258,348.29, 387,389.59 and 116,071.62 is: 174,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,348.29 : 387,389.59 = 116,071.62 : x
  2. Step 2: Convert to fraction form
    258,348.29/387,389.59 = 116,071.62/x
  3. Step 3: Cross multiply
    258,348.29x = 387,389.59 × 116,071.62
  4. Step 4: Simplify right side
    258,348.29x = 44,964,935,539.55
  5. Step 5: Solve for x
    x = 44,964,935,539.55/258,348.29
  6. Step 6: Final answer
    x = 174,047.74

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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.