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Finding the Fourth Proportional to 217,877.10, 300,660.93 and 127,238.10

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Solution

The fourth proportional to 217,877.10, 300,660.93 and 127,238.10 is: 175,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,877.10 : 300,660.93 = 127,238.10 : x
  2. Step 2: Convert to fraction form
    217,877.10/300,660.93 = 127,238.10/x
  3. Step 3: Cross multiply
    217,877.10x = 300,660.93 × 127,238.10
  4. Step 4: Simplify right side
    217,877.10x = 38,255,525,477.43
  5. Step 5: Solve for x
    x = 38,255,525,477.43/217,877.10
  6. Step 6: Final answer
    x = 175,583.05

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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.