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Finding the Fourth Proportional to 211,542.05, 317,323.31 and 69,374.74

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Solution

The fourth proportional to 211,542.05, 317,323.31 and 69,374.74 is: 104,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,542.05 : 317,323.31 = 69,374.74 : x
  2. Step 2: Convert to fraction form
    211,542.05/317,323.31 = 69,374.74/x
  3. Step 3: Cross multiply
    211,542.05x = 317,323.31 × 69,374.74
  4. Step 4: Simplify right side
    211,542.05x = 22,014,222,127.19
  5. Step 5: Solve for x
    x = 22,014,222,127.19/211,542.05
  6. Step 6: Final answer
    x = 104,065.47

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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.