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Finding the Fourth Proportional to 356,162.64, 534,271.59 and 103,447.20

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Solution

The fourth proportional to 356,162.64, 534,271.59 and 103,447.20 is: 155,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,162.64 : 534,271.59 = 103,447.20 : x
  2. Step 2: Convert to fraction form
    356,162.64/534,271.59 = 103,447.20/x
  3. Step 3: Cross multiply
    356,162.64x = 534,271.59 × 103,447.20
  4. Step 4: Simplify right side
    356,162.64x = 55,268,900,025.05
  5. Step 5: Solve for x
    x = 55,268,900,025.05/356,162.64
  6. Step 6: Final answer
    x = 155,178.83

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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.