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Finding the Fourth Proportional to 519,298.70, 778,875.15 and 164,348.60

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Solution

The fourth proportional to 519,298.70, 778,875.15 and 164,348.60 is: 246,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,298.70 : 778,875.15 = 164,348.60 : x
  2. Step 2: Convert to fraction form
    519,298.70/778,875.15 = 164,348.60/x
  3. Step 3: Cross multiply
    519,298.70x = 778,875.15 × 164,348.60
  4. Step 4: Simplify right side
    519,298.70x = 128,007,040,477.29
  5. Step 5: Solve for x
    x = 128,007,040,477.29/519,298.70
  6. Step 6: Final answer
    x = 246,499.83

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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.