Home / 401,434.97-553,981.03-220,148.18

Finding the Fourth Proportional to 401,434.97, 553,981.03 and 220,148.18

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Solution

The fourth proportional to 401,434.97, 553,981.03 and 220,148.18 is: 303,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,434.97 : 553,981.03 = 220,148.18 : x
  2. Step 2: Convert to fraction form
    401,434.97/553,981.03 = 220,148.18/x
  3. Step 3: Cross multiply
    401,434.97x = 553,981.03 × 220,148.18
  4. Step 4: Simplify right side
    401,434.97x = 121,957,915,509.03
  5. Step 5: Solve for x
    x = 121,957,915,509.03/401,434.97
  6. Step 6: Final answer
    x = 303,804.91

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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.