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Finding the Fourth Proportional to 260,010.20, 390,015.30 and 227,869.40

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Solution

The fourth proportional to 260,010.20, 390,015.30 and 227,869.40 is: 341,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,010.20 : 390,015.30 = 227,869.40 : x
  2. Step 2: Convert to fraction form
    260,010.20/390,015.30 = 227,869.40/x
  3. Step 3: Cross multiply
    260,010.20x = 390,015.30 × 227,869.40
  4. Step 4: Simplify right side
    260,010.20x = 88,872,552,401.82
  5. Step 5: Solve for x
    x = 88,872,552,401.82/260,010.20
  6. Step 6: Final answer
    x = 341,804.10

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1.5x scale

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.