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Finding the Fourth Proportional to 519,855.84, 779,550.48 and 239,220

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Solution

The fourth proportional to 519,855.84, 779,550.48 and 239,220 is: 358,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,855.84 : 779,550.48 = 239,220 : x
  2. Step 2: Convert to fraction form
    519,855.84/779,550.48 = 239,220/x
  3. Step 3: Cross multiply
    519,855.84x = 779,550.48 × 239,220
  4. Step 4: Simplify right side
    519,855.84x = 186,484,065,825.60
  5. Step 5: Solve for x
    x = 186,484,065,825.60/519,855.84
  6. Step 6: Final answer
    x = 358,722.65

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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.