Home / 217,384.32-299,986.56-121,890.72

Finding the Fourth Proportional to 217,384.32, 299,986.56 and 121,890.72

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Solution

The fourth proportional to 217,384.32, 299,986.56 and 121,890.72 is: 168,207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,384.32 : 299,986.56 = 121,890.72 : x
  2. Step 2: Convert to fraction form
    217,384.32/299,986.56 = 121,890.72/x
  3. Step 3: Cross multiply
    217,384.32x = 299,986.56 × 121,890.72
  4. Step 4: Simplify right side
    217,384.32x = 36,565,577,788.72
  5. Step 5: Solve for x
    x = 36,565,577,788.72/217,384.32
  6. Step 6: Final answer
    x = 168,207.06

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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.