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Finding the Fourth Proportional to 519,818.70, 780,165.45 and 204,501.90

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Solution

The fourth proportional to 519,818.70, 780,165.45 and 204,501.90 is: 306,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,818.70 : 780,165.45 = 204,501.90 : x
  2. Step 2: Convert to fraction form
    519,818.70/780,165.45 = 204,501.90/x
  3. Step 3: Cross multiply
    519,818.70x = 780,165.45 × 204,501.90
  4. Step 4: Simplify right side
    519,818.70x = 159,545,316,839.36
  5. Step 5: Solve for x
    x = 159,545,316,839.36/519,818.70
  6. Step 6: Final answer
    x = 306,924.93

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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.