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Finding the Fourth Proportional to 261,033.80, 390,675.90 and 261,033.80

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Solution

The fourth proportional to 261,033.80, 390,675.90 and 261,033.80 is: 390,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,033.80 : 390,675.90 = 261,033.80 : x
  2. Step 2: Convert to fraction form
    261,033.80/390,675.90 = 261,033.80/x
  3. Step 3: Cross multiply
    261,033.80x = 390,675.90 × 261,033.80
  4. Step 4: Simplify right side
    261,033.80x = 101,979,614,745.42
  5. Step 5: Solve for x
    x = 101,979,614,745.42/261,033.80
  6. Step 6: Final answer
    x = 390,675.90

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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.