Home / 389,130.78-583,724.97-139,814.94

Finding the Fourth Proportional to 389,130.78, 583,724.97 and 139,814.94

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Solution

The fourth proportional to 389,130.78, 583,724.97 and 139,814.94 is: 209,732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,130.78 : 583,724.97 = 139,814.94 : x
  2. Step 2: Convert to fraction form
    389,130.78/583,724.97 = 139,814.94/x
  3. Step 3: Cross multiply
    389,130.78x = 583,724.97 × 139,814.94
  4. Step 4: Simplify right side
    389,130.78x = 81,613,471,657.05
  5. Step 5: Solve for x
    x = 81,613,471,657.05/389,130.78
  6. Step 6: Final answer
    x = 209,732.76

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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.