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Finding the Fourth Proportional to 208,360.80, 291,355.20 and 208,360.80

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Solution

The fourth proportional to 208,360.80, 291,355.20 and 208,360.80 is: 291,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,360.80 : 291,355.20 = 208,360.80 : x
  2. Step 2: Convert to fraction form
    208,360.80/291,355.20 = 208,360.80/x
  3. Step 3: Cross multiply
    208,360.80x = 291,355.20 × 208,360.80
  4. Step 4: Simplify right side
    208,360.80x = 60,707,002,556.16
  5. Step 5: Solve for x
    x = 60,707,002,556.16/208,360.80
  6. Step 6: Final answer
    x = 291,355.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.