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Finding the Fourth Proportional to 277,715.76, 416,612.52 and 90,679.92

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Solution

The fourth proportional to 277,715.76, 416,612.52 and 90,679.92 is: 136,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,715.76 : 416,612.52 = 90,679.92 : x
  2. Step 2: Convert to fraction form
    277,715.76/416,612.52 = 90,679.92/x
  3. Step 3: Cross multiply
    277,715.76x = 416,612.52 × 90,679.92
  4. Step 4: Simplify right side
    277,715.76x = 37,778,389,984.60
  5. Step 5: Solve for x
    x = 37,778,389,984.60/277,715.76
  6. Step 6: Final answer
    x = 136,032.58

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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.