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Finding the Fourth Proportional to 553,540.10, 830,067.15 and 253,921.10

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Solution

The fourth proportional to 553,540.10, 830,067.15 and 253,921.10 is: 380,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,540.10 : 830,067.15 = 253,921.10 : x
  2. Step 2: Convert to fraction form
    553,540.10/830,067.15 = 253,921.10/x
  3. Step 3: Cross multiply
    553,540.10x = 830,067.15 × 253,921.10
  4. Step 4: Simplify right side
    553,540.10x = 210,771,563,801.87
  5. Step 5: Solve for x
    x = 210,771,563,801.87/553,540.10
  6. Step 6: Final answer
    x = 380,770.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.