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Finding the Fourth Proportional to 484,521.81, 726,727.35 and 129,563.51

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Solution

The fourth proportional to 484,521.81, 726,727.35 and 129,563.51 is: 194,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,521.81 : 726,727.35 = 129,563.51 : x
  2. Step 2: Convert to fraction form
    484,521.81/726,727.35 = 129,563.51/x
  3. Step 3: Cross multiply
    484,521.81x = 726,727.35 × 129,563.51
  4. Step 4: Simplify right side
    484,521.81x = 94,157,345,856.45
  5. Step 5: Solve for x
    x = 94,157,345,856.45/484,521.81
  6. Step 6: Final answer
    x = 194,330.46

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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.