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Finding the Fourth Proportional to 518,267.69, 715,233.77 and 303,476.95

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Solution

The fourth proportional to 518,267.69, 715,233.77 and 303,476.95 is: 418,812.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,267.69 : 715,233.77 = 303,476.95 : x
  2. Step 2: Convert to fraction form
    518,267.69/715,233.77 = 303,476.95/x
  3. Step 3: Cross multiply
    518,267.69x = 715,233.77 × 303,476.95
  4. Step 4: Simplify right side
    518,267.69x = 217,056,963,056.60
  5. Step 5: Solve for x
    x = 217,056,963,056.60/518,267.69
  6. Step 6: Final answer
    x = 418,812.45

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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.