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Finding the Fourth Proportional to 282,199.80, 389,433.71 and 153,134.97

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Solution

The fourth proportional to 282,199.80, 389,433.71 and 153,134.97 is: 211,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,199.80 : 389,433.71 = 153,134.97 : x
  2. Step 2: Convert to fraction form
    282,199.80/389,433.71 = 153,134.97/x
  3. Step 3: Cross multiply
    282,199.80x = 389,433.71 × 153,134.97
  4. Step 4: Simplify right side
    282,199.80x = 59,635,919,749.48
  5. Step 5: Solve for x
    x = 59,635,919,749.48/282,199.80
  6. Step 6: Final answer
    x = 211,325.17

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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.