Home / 390,940.26-539,555.58-247,713.72

Finding the Fourth Proportional to 390,940.26, 539,555.58 and 247,713.72

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Solution

The fourth proportional to 390,940.26, 539,555.58 and 247,713.72 is: 341,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,940.26 : 539,555.58 = 247,713.72 : x
  2. Step 2: Convert to fraction form
    390,940.26/539,555.58 = 247,713.72/x
  3. Step 3: Cross multiply
    390,940.26x = 539,555.58 × 247,713.72
  4. Step 4: Simplify right side
    390,940.26x = 133,655,319,868.56
  5. Step 5: Solve for x
    x = 133,655,319,868.56/390,940.26
  6. Step 6: Final answer
    x = 341,881.70

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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.