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Finding the Fourth Proportional to 518,292.20, 714,998.76 and 303,299.21

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Solution

The fourth proportional to 518,292.20, 714,998.76 and 303,299.21 is: 418,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,292.20 : 714,998.76 = 303,299.21 : x
  2. Step 2: Convert to fraction form
    518,292.20/714,998.76 = 303,299.21/x
  3. Step 3: Cross multiply
    518,292.20x = 714,998.76 × 303,299.21
  4. Step 4: Simplify right side
    518,292.20x = 216,858,559,058.98
  5. Step 5: Solve for x
    x = 216,858,559,058.98/518,292.20
  6. Step 6: Final answer
    x = 418,409.84

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1.5x scale

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.