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Finding the Fourth Proportional to 260,218.71, 390,328.16 and 73,230.21

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Solution

The fourth proportional to 260,218.71, 390,328.16 and 73,230.21 is: 109,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,218.71 : 390,328.16 = 73,230.21 : x
  2. Step 2: Convert to fraction form
    260,218.71/390,328.16 = 73,230.21/x
  3. Step 3: Cross multiply
    260,218.71x = 390,328.16 × 73,230.21
  4. Step 4: Simplify right side
    260,218.71x = 28,583,812,759.56
  5. Step 5: Solve for x
    x = 28,583,812,759.56/260,218.71
  6. Step 6: Final answer
    x = 109,845.34

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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.