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Finding the Fourth Proportional to 401,074.74, 553,364.46 and 228,987

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Solution

The fourth proportional to 401,074.74, 553,364.46 and 228,987 is: 315,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,074.74 : 553,364.46 = 228,987 : x
  2. Step 2: Convert to fraction form
    401,074.74/553,364.46 = 228,987/x
  3. Step 3: Cross multiply
    401,074.74x = 553,364.46 × 228,987
  4. Step 4: Simplify right side
    401,074.74x = 126,713,267,602.02
  5. Step 5: Solve for x
    x = 126,713,267,602.02/401,074.74
  6. Step 6: Final answer
    x = 315,934.30

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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.