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Finding the Fourth Proportional to 389,831.93, 584,952.83 and 276,709.76

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Solution

The fourth proportional to 389,831.93, 584,952.83 and 276,709.76 is: 415,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,831.93 : 584,952.83 = 276,709.76 : x
  2. Step 2: Convert to fraction form
    389,831.93/584,952.83 = 276,709.76/x
  3. Step 3: Cross multiply
    389,831.93x = 584,952.83 × 276,709.76
  4. Step 4: Simplify right side
    389,831.93x = 161,862,152,892.31
  5. Step 5: Solve for x
    x = 161,862,152,892.31/389,831.93
  6. Step 6: Final answer
    x = 415,210.10

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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.