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Finding the Fourth Proportional to 286,585.73, 429,471.22 and 211,112.36

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Solution

The fourth proportional to 286,585.73, 429,471.22 and 211,112.36 is: 316,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,585.73 : 429,471.22 = 211,112.36 : x
  2. Step 2: Convert to fraction form
    286,585.73/429,471.22 = 211,112.36/x
  3. Step 3: Cross multiply
    286,585.73x = 429,471.22 × 211,112.36
  4. Step 4: Simplify right side
    286,585.73x = 90,666,682,806.28
  5. Step 5: Solve for x
    x = 90,666,682,806.28/286,585.73
  6. Step 6: Final answer
    x = 316,368.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.