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Finding the Fourth Proportional to 250,430.56, 374,747.90 and 216,812.21

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Solution

The fourth proportional to 250,430.56, 374,747.90 and 216,812.21 is: 324,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,430.56 : 374,747.90 = 216,812.21 : x
  2. Step 2: Convert to fraction form
    250,430.56/374,747.90 = 216,812.21/x
  3. Step 3: Cross multiply
    250,430.56x = 374,747.90 × 216,812.21
  4. Step 4: Simplify right side
    250,430.56x = 81,249,917,434.06
  5. Step 5: Solve for x
    x = 81,249,917,434.06/250,430.56
  6. Step 6: Final answer
    x = 324,440.91

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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.