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Finding the Fourth Proportional to 519,343.65, 778,545.27 and 203,715.81

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Solution

The fourth proportional to 519,343.65, 778,545.27 and 203,715.81 is: 305,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,343.65 : 778,545.27 = 203,715.81 : x
  2. Step 2: Convert to fraction form
    519,343.65/778,545.27 = 203,715.81/x
  3. Step 3: Cross multiply
    519,343.65x = 778,545.27 × 203,715.81
  4. Step 4: Simplify right side
    519,343.65x = 158,601,980,299.72
  5. Step 5: Solve for x
    x = 158,601,980,299.72/519,343.65
  6. Step 6: Final answer
    x = 305,389.27

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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.