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Finding the Fourth Proportional to 277,947.92, 416,946.48 and 78,270.08

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Solution

The fourth proportional to 277,947.92, 416,946.48 and 78,270.08 is: 117,412.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,947.92 : 416,946.48 = 78,270.08 : x
  2. Step 2: Convert to fraction form
    277,947.92/416,946.48 = 78,270.08/x
  3. Step 3: Cross multiply
    277,947.92x = 416,946.48 × 78,270.08
  4. Step 4: Simplify right side
    277,947.92x = 32,634,434,345.32
  5. Step 5: Solve for x
    x = 32,634,434,345.32/277,947.92
  6. Step 6: Final answer
    x = 117,412.05

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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.