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Finding the Fourth Proportional to 362,690.78, 500,369.96 and 209,700.95

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Solution

The fourth proportional to 362,690.78, 500,369.96 and 209,700.95 is: 289,304.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,690.78 : 500,369.96 = 209,700.95 : x
  2. Step 2: Convert to fraction form
    362,690.78/500,369.96 = 209,700.95/x
  3. Step 3: Cross multiply
    362,690.78x = 500,369.96 × 209,700.95
  4. Step 4: Simplify right side
    362,690.78x = 104,928,053,985.87
  5. Step 5: Solve for x
    x = 104,928,053,985.87/362,690.78
  6. Step 6: Final answer
    x = 289,304.45

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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.