Home / 401,831.28-554,210.64-355,939.92

Finding the Fourth Proportional to 401,831.28, 554,210.64 and 355,939.92

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Solution

The fourth proportional to 401,831.28, 554,210.64 and 355,939.92 is: 490,916.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,831.28 : 554,210.64 = 355,939.92 : x
  2. Step 2: Convert to fraction form
    401,831.28/554,210.64 = 355,939.92/x
  3. Step 3: Cross multiply
    401,831.28x = 554,210.64 × 355,939.92
  4. Step 4: Simplify right side
    401,831.28x = 197,265,690,864.75
  5. Step 5: Solve for x
    x = 197,265,690,864.75/401,831.28
  6. Step 6: Final answer
    x = 490,916.71

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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.