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Finding the Fourth Proportional to 260,794.80, 390,317.40 and 260,794.80

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Solution

The fourth proportional to 260,794.80, 390,317.40 and 260,794.80 is: 390,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,794.80 : 390,317.40 = 260,794.80 : x
  2. Step 2: Convert to fraction form
    260,794.80/390,317.40 = 260,794.80/x
  3. Step 3: Cross multiply
    260,794.80x = 390,317.40 × 260,794.80
  4. Step 4: Simplify right side
    260,794.80x = 101,792,748,269.52
  5. Step 5: Solve for x
    x = 101,792,748,269.52/260,794.80
  6. Step 6: Final answer
    x = 390,317.40

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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.