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Finding the Fourth Proportional to 553,987.28, 830,163.48 and 253,727.12

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Solution

The fourth proportional to 553,987.28, 830,163.48 and 253,727.12 is: 380,216.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,987.28 : 830,163.48 = 253,727.12 : x
  2. Step 2: Convert to fraction form
    553,987.28/830,163.48 = 253,727.12/x
  3. Step 3: Cross multiply
    553,987.28x = 830,163.48 × 253,727.12
  4. Step 4: Simplify right side
    553,987.28x = 210,634,988,909.58
  5. Step 5: Solve for x
    x = 210,634,988,909.58/553,987.28
  6. Step 6: Final answer
    x = 380,216.29

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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.