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Finding the Fourth Proportional to 258,085.80, 387,128.70 and 244,307.70

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Solution

The fourth proportional to 258,085.80, 387,128.70 and 244,307.70 is: 366,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,085.80 : 387,128.70 = 244,307.70 : x
  2. Step 2: Convert to fraction form
    258,085.80/387,128.70 = 244,307.70/x
  3. Step 3: Cross multiply
    258,085.80x = 387,128.70 × 244,307.70
  4. Step 4: Simplify right side
    258,085.80x = 94,578,522,300.99
  5. Step 5: Solve for x
    x = 94,578,522,300.99/258,085.80
  6. Step 6: Final answer
    x = 366,461.55

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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.