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Finding the Fourth Proportional to 518,040.09, 714,946.50 and 303,167.34

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Solution

The fourth proportional to 518,040.09, 714,946.50 and 303,167.34 is: 418,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,040.09 : 714,946.50 = 303,167.34 : x
  2. Step 2: Convert to fraction form
    518,040.09/714,946.50 = 303,167.34/x
  3. Step 3: Cross multiply
    518,040.09x = 714,946.50 × 303,167.34
  4. Step 4: Simplify right side
    518,040.09x = 216,748,428,647.31
  5. Step 5: Solve for x
    x = 216,748,428,647.31/518,040.09
  6. Step 6: Final answer
    x = 418,400.88

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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.