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Finding the Fourth Proportional to 700,157.25, 966,159.56 and 394,135.81

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Solution

The fourth proportional to 700,157.25, 966,159.56 and 394,135.81 is: 543,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,157.25 : 966,159.56 = 394,135.81 : x
  2. Step 2: Convert to fraction form
    700,157.25/966,159.56 = 394,135.81/x
  3. Step 3: Cross multiply
    700,157.25x = 966,159.56 × 394,135.81
  4. Step 4: Simplify right side
    700,157.25x = 380,798,079,339.78
  5. Step 5: Solve for x
    x = 380,798,079,339.78/700,157.25
  6. Step 6: Final answer
    x = 543,875.08

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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.