Home / 390,944.53-539,568.00-268,336.18

Finding the Fourth Proportional to 390,944.53, 539,568.00 and 268,336.18

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Solution

The fourth proportional to 390,944.53, 539,568.00 and 268,336.18 is: 370,348.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,944.53 : 539,568.00 = 268,336.18 : x
  2. Step 2: Convert to fraction form
    390,944.53/539,568.00 = 268,336.18/x
  3. Step 3: Cross multiply
    390,944.53x = 539,568.00 × 268,336.18
  4. Step 4: Simplify right side
    390,944.53x = 144,785,615,299.40
  5. Step 5: Solve for x
    x = 144,785,615,299.40/390,944.53
  6. Step 6: Final answer
    x = 370,348.23

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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.