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Finding the Fourth Proportional to 217,760.78, 300,482.01 and 127,095.95

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Solution

The fourth proportional to 217,760.78, 300,482.01 and 127,095.95 is: 175,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,760.78 : 300,482.01 = 127,095.95 : x
  2. Step 2: Convert to fraction form
    217,760.78/300,482.01 = 127,095.95/x
  3. Step 3: Cross multiply
    217,760.78x = 300,482.01 × 127,095.95
  4. Step 4: Simplify right side
    217,760.78x = 38,190,047,270.06
  5. Step 5: Solve for x
    x = 38,190,047,270.06/217,760.78
  6. Step 6: Final answer
    x = 175,376.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.