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Finding the Fourth Proportional to 500,088.27, 690,122.25 and 285,222.81

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Solution

The fourth proportional to 500,088.27, 690,122.25 and 285,222.81 is: 393,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,088.27 : 690,122.25 = 285,222.81 : x
  2. Step 2: Convert to fraction form
    500,088.27/690,122.25 = 285,222.81/x
  3. Step 3: Cross multiply
    500,088.27x = 690,122.25 × 285,222.81
  4. Step 4: Simplify right side
    500,088.27x = 196,838,607,388.52
  5. Step 5: Solve for x
    x = 196,838,607,388.52/500,088.27
  6. Step 6: Final answer
    x = 393,607.73

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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.