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Finding the Fourth Proportional to 260,069.61, 390,217.11 and 91,710.24

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Solution

The fourth proportional to 260,069.61, 390,217.11 and 91,710.24 is: 137,605.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,069.61 : 390,217.11 = 91,710.24 : x
  2. Step 2: Convert to fraction form
    260,069.61/390,217.11 = 91,710.24/x
  3. Step 3: Cross multiply
    260,069.61x = 390,217.11 × 91,710.24
  4. Step 4: Simplify right side
    260,069.61x = 35,786,903,518.85
  5. Step 5: Solve for x
    x = 35,786,903,518.85/260,069.61
  6. Step 6: Final answer
    x = 137,605.09

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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.