Home / 401,179.17-553,622.28-217,413.78

Finding the Fourth Proportional to 401,179.17, 553,622.28 and 217,413.78

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Solution

The fourth proportional to 401,179.17, 553,622.28 and 217,413.78 is: 300,028.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,179.17 : 553,622.28 = 217,413.78 : x
  2. Step 2: Convert to fraction form
    401,179.17/553,622.28 = 217,413.78/x
  3. Step 3: Cross multiply
    401,179.17x = 553,622.28 × 217,413.78
  4. Step 4: Simplify right side
    401,179.17x = 120,365,112,587.02
  5. Step 5: Solve for x
    x = 120,365,112,587.02/401,179.17
  6. Step 6: Final answer
    x = 300,028.32

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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.