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Finding the Fourth Proportional to 260,047.30, 390,070.95 and 225,055.30

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Solution

The fourth proportional to 260,047.30, 390,070.95 and 225,055.30 is: 337,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,047.30 : 390,070.95 = 225,055.30 : x
  2. Step 2: Convert to fraction form
    260,047.30/390,070.95 = 225,055.30/x
  3. Step 3: Cross multiply
    260,047.30x = 390,070.95 × 225,055.30
  4. Step 4: Simplify right side
    260,047.30x = 87,787,534,673.54
  5. Step 5: Solve for x
    x = 87,787,534,673.54/260,047.30
  6. Step 6: Final answer
    x = 337,582.95

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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.