Home / 371,928.80-513,393.38-221,024

Finding the Fourth Proportional to 371,928.80, 513,393.38 and 221,024

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Solution

The fourth proportional to 371,928.80, 513,393.38 and 221,024 is: 305,091.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,928.80 : 513,393.38 = 221,024 : x
  2. Step 2: Convert to fraction form
    371,928.80/513,393.38 = 221,024/x
  3. Step 3: Cross multiply
    371,928.80x = 513,393.38 × 221,024
  4. Step 4: Simplify right side
    371,928.80x = 113,472,258,421.12
  5. Step 5: Solve for x
    x = 113,472,258,421.12/371,928.80
  6. Step 6: Final answer
    x = 305,091.35

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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.