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Finding the Fourth Proportional to 266,781.69, 368,168.94 and 152,078.40

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Solution

The fourth proportional to 266,781.69, 368,168.94 and 152,078.40 is: 209,874.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,781.69 : 368,168.94 = 152,078.40 : x
  2. Step 2: Convert to fraction form
    266,781.69/368,168.94 = 152,078.40/x
  3. Step 3: Cross multiply
    266,781.69x = 368,168.94 × 152,078.40
  4. Step 4: Simplify right side
    266,781.69x = 55,990,543,324.90
  5. Step 5: Solve for x
    x = 55,990,543,324.90/266,781.69
  6. Step 6: Final answer
    x = 209,874.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.