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Finding the Fourth Proportional to 260,185.66, 390,278.48 and 73,197.16

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Solution

The fourth proportional to 260,185.66, 390,278.48 and 73,197.16 is: 109,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,185.66 : 390,278.48 = 73,197.16 : x
  2. Step 2: Convert to fraction form
    260,185.66/390,278.48 = 73,197.16/x
  3. Step 3: Cross multiply
    260,185.66x = 390,278.48 × 73,197.16
  4. Step 4: Simplify right side
    260,185.66x = 28,567,276,345.12
  5. Step 5: Solve for x
    x = 28,567,276,345.12/260,185.66
  6. Step 6: Final answer
    x = 109,795.74

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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.