Home / 217,807.43-300,570.35-121,011.72

Finding the Fourth Proportional to 217,807.43, 300,570.35 and 121,011.72

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Solution

The fourth proportional to 217,807.43, 300,570.35 and 121,011.72 is: 166,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,807.43 : 300,570.35 = 121,011.72 : x
  2. Step 2: Convert to fraction form
    217,807.43/300,570.35 = 121,011.72/x
  3. Step 3: Cross multiply
    217,807.43x = 300,570.35 × 121,011.72
  4. Step 4: Simplify right side
    217,807.43x = 36,372,534,993.01
  5. Step 5: Solve for x
    x = 36,372,534,993.01/217,807.43
  6. Step 6: Final answer
    x = 166,994.00

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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.