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Finding the Fourth Proportional to 500,362.81, 750,545.73 and 121,282.05

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Solution

The fourth proportional to 500,362.81, 750,545.73 and 121,282.05 is: 181,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,362.81 : 750,545.73 = 121,282.05 : x
  2. Step 2: Convert to fraction form
    500,362.81/750,545.73 = 121,282.05/x
  3. Step 3: Cross multiply
    500,362.81x = 750,545.73 × 121,282.05
  4. Step 4: Simplify right side
    500,362.81x = 91,027,724,753.15
  5. Step 5: Solve for x
    x = 91,027,724,753.15/500,362.81
  6. Step 6: Final answer
    x = 181,923.44

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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.