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Finding the Fourth Proportional to 507,218.47, 699,952.92 and 280,859.11

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Solution

The fourth proportional to 507,218.47, 699,952.92 and 280,859.11 is: 387,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,218.47 : 699,952.92 = 280,859.11 : x
  2. Step 2: Convert to fraction form
    507,218.47/699,952.92 = 280,859.11/x
  3. Step 3: Cross multiply
    507,218.47x = 699,952.92 × 280,859.11
  4. Step 4: Simplify right side
    507,218.47x = 196,588,154,153.10
  5. Step 5: Solve for x
    x = 196,588,154,153.10/507,218.47
  6. Step 6: Final answer
    x = 387,580.83

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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.