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Finding the Fourth Proportional to 500,661.02, 690,909.25 and 271,222.68

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Solution

The fourth proportional to 500,661.02, 690,909.25 and 271,222.68 is: 374,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,661.02 : 690,909.25 = 271,222.68 : x
  2. Step 2: Convert to fraction form
    500,661.02/690,909.25 = 271,222.68/x
  3. Step 3: Cross multiply
    500,661.02x = 690,909.25 × 271,222.68
  4. Step 4: Simplify right side
    500,661.02x = 187,390,255,152.82
  5. Step 5: Solve for x
    x = 187,390,255,152.82/500,661.02
  6. Step 6: Final answer
    x = 374,285.69

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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.