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Finding the Fourth Proportional to 260,449.37, 390,689.18 and 100,526.21

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Solution

The fourth proportional to 260,449.37, 390,689.18 and 100,526.21 is: 150,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,449.37 : 390,689.18 = 100,526.21 : x
  2. Step 2: Convert to fraction form
    260,449.37/390,689.18 = 100,526.21/x
  3. Step 3: Cross multiply
    260,449.37x = 390,689.18 × 100,526.21
  4. Step 4: Simplify right side
    260,449.37x = 39,274,501,939.39
  5. Step 5: Solve for x
    x = 39,274,501,939.39/260,449.37
  6. Step 6: Final answer
    x = 150,795.15

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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.