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Finding the Fourth Proportional to 260,101.47, 390,152.21 and 73,112.97

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Solution

The fourth proportional to 260,101.47, 390,152.21 and 73,112.97 is: 109,669.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,101.47 : 390,152.21 = 73,112.97 : x
  2. Step 2: Convert to fraction form
    260,101.47/390,152.21 = 73,112.97/x
  3. Step 3: Cross multiply
    260,101.47x = 390,152.21 × 73,112.97
  4. Step 4: Simplify right side
    260,101.47x = 28,525,186,825.16
  5. Step 5: Solve for x
    x = 28,525,186,825.16/260,101.47
  6. Step 6: Final answer
    x = 109,669.46

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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.