Home / 260,010.30-390,015.45-212,771.10

Finding the Fourth Proportional to 260,010.30, 390,015.45 and 212,771.10

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Solution

The fourth proportional to 260,010.30, 390,015.45 and 212,771.10 is: 319,156.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,010.30 : 390,015.45 = 212,771.10 : x
  2. Step 2: Convert to fraction form
    260,010.30/390,015.45 = 212,771.10/x
  3. Step 3: Cross multiply
    260,010.30x = 390,015.45 × 212,771.10
  4. Step 4: Simplify right side
    260,010.30x = 82,984,016,313.50
  5. Step 5: Solve for x
    x = 82,984,016,313.50/260,010.30
  6. Step 6: Final answer
    x = 319,156.65

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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.