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Finding the Fourth Proportional to 519,674.40, 779,503.10 and 164,687.85

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Solution

The fourth proportional to 519,674.40, 779,503.10 and 164,687.85 is: 247,029.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,674.40 : 779,503.10 = 164,687.85 : x
  2. Step 2: Convert to fraction form
    519,674.40/779,503.10 = 164,687.85/x
  3. Step 3: Cross multiply
    519,674.40x = 779,503.10 × 164,687.85
  4. Step 4: Simplify right side
    519,674.40x = 128,374,688,783.90
  5. Step 5: Solve for x
    x = 128,374,688,783.90/519,674.40
  6. Step 6: Final answer
    x = 247,029.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.