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Finding the Fourth Proportional to 258,715.69, 388,073.64 and 116,394.76

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Solution

The fourth proportional to 258,715.69, 388,073.64 and 116,394.76 is: 174,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,715.69 : 388,073.64 = 116,394.76 : x
  2. Step 2: Convert to fraction form
    258,715.69/388,073.64 = 116,394.76/x
  3. Step 3: Cross multiply
    258,715.69x = 388,073.64 × 116,394.76
  4. Step 4: Simplify right side
    258,715.69x = 45,169,737,608.15
  5. Step 5: Solve for x
    x = 45,169,737,608.15/258,715.69
  6. Step 6: Final answer
    x = 174,592.18

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1.5x scale

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.