Home / 388,831.13-536,586.96-209,983.13

Finding the Fourth Proportional to 388,831.13, 536,586.96 and 209,983.13

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Solution

The fourth proportional to 388,831.13, 536,586.96 and 209,983.13 is: 289,776.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,831.13 : 536,586.96 = 209,983.13 : x
  2. Step 2: Convert to fraction form
    388,831.13/536,586.96 = 209,983.13/x
  3. Step 3: Cross multiply
    388,831.13x = 536,586.96 × 209,983.13
  4. Step 4: Simplify right side
    388,831.13x = 112,674,206,695.05
  5. Step 5: Solve for x
    x = 112,674,206,695.05/388,831.13
  6. Step 6: Final answer
    x = 289,776.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.