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Finding the Fourth Proportional to 260,409.15, 390,610.89 and 197,614.89

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Solution

The fourth proportional to 260,409.15, 390,610.89 and 197,614.89 is: 296,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,409.15 : 390,610.89 = 197,614.89 : x
  2. Step 2: Convert to fraction form
    260,409.15/390,610.89 = 197,614.89/x
  3. Step 3: Cross multiply
    260,409.15x = 390,610.89 × 197,614.89
  4. Step 4: Simplify right side
    260,409.15x = 77,190,528,060.15
  5. Step 5: Solve for x
    x = 77,190,528,060.15/260,409.15
  6. Step 6: Final answer
    x = 296,420.18

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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.