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Finding the Fourth Proportional to 518,727.76, 716,022.90 and 303,937.36

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Solution

The fourth proportional to 518,727.76, 716,022.90 and 303,937.36 is: 419,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,727.76 : 716,022.90 = 303,937.36 : x
  2. Step 2: Convert to fraction form
    518,727.76/716,022.90 = 303,937.36/x
  3. Step 3: Cross multiply
    518,727.76x = 716,022.90 × 303,937.36
  4. Step 4: Simplify right side
    518,727.76x = 217,626,109,925.54
  5. Step 5: Solve for x
    x = 217,626,109,925.54/518,727.76
  6. Step 6: Final answer
    x = 419,538.20

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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.