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Finding the Fourth Proportional to 374,002.79, 516,055.46 and 221,065.88

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Solution

The fourth proportional to 374,002.79, 516,055.46 and 221,065.88 is: 305,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,002.79 : 516,055.46 = 221,065.88 : x
  2. Step 2: Convert to fraction form
    374,002.79/516,055.46 = 221,065.88/x
  3. Step 3: Cross multiply
    374,002.79x = 516,055.46 × 221,065.88
  4. Step 4: Simplify right side
    374,002.79x = 114,082,250,708.10
  5. Step 5: Solve for x
    x = 114,082,250,708.10/374,002.79
  6. Step 6: Final answer
    x = 305,030.48

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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.