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Finding the Fourth Proportional to 217,530.16, 300,124.32 and 126,821.93

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Solution

The fourth proportional to 217,530.16, 300,124.32 and 126,821.93 is: 174,975.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,530.16 : 300,124.32 = 126,821.93 : x
  2. Step 2: Convert to fraction form
    217,530.16/300,124.32 = 126,821.93/x
  3. Step 3: Cross multiply
    217,530.16x = 300,124.32 × 126,821.93
  4. Step 4: Simplify right side
    217,530.16x = 38,062,346,252.65
  5. Step 5: Solve for x
    x = 38,062,346,252.65/217,530.16
  6. Step 6: Final answer
    x = 174,975.03

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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.