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Finding the Fourth Proportional to 277,721.40, 416,711.70 and 144,751.80

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Solution

The fourth proportional to 277,721.40, 416,711.70 and 144,751.80 is: 217,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,721.40 : 416,711.70 = 144,751.80 : x
  2. Step 2: Convert to fraction form
    277,721.40/416,711.70 = 144,751.80/x
  3. Step 3: Cross multiply
    277,721.40x = 416,711.70 × 144,751.80
  4. Step 4: Simplify right side
    277,721.40x = 60,319,768,656.06
  5. Step 5: Solve for x
    x = 60,319,768,656.06/277,721.40
  6. Step 6: Final answer
    x = 217,195.25

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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.