Home / 378,436.32-522,258.84-217,298.16

Finding the Fourth Proportional to 378,436.32, 522,258.84 and 217,298.16

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Solution

The fourth proportional to 378,436.32, 522,258.84 and 217,298.16 is: 299,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,436.32 : 522,258.84 = 217,298.16 : x
  2. Step 2: Convert to fraction form
    378,436.32/522,258.84 = 217,298.16/x
  3. Step 3: Cross multiply
    378,436.32x = 522,258.84 × 217,298.16
  4. Step 4: Simplify right side
    378,436.32x = 113,485,884,975.73
  5. Step 5: Solve for x
    x = 113,485,884,975.73/378,436.32
  6. Step 6: Final answer
    x = 299,881.06

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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.