Home / 390,720.11-539,196.35-227,473.92

Finding the Fourth Proportional to 390,720.11, 539,196.35 and 227,473.92

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Solution

The fourth proportional to 390,720.11, 539,196.35 and 227,473.92 is: 313,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,720.11 : 539,196.35 = 227,473.92 : x
  2. Step 2: Convert to fraction form
    390,720.11/539,196.35 = 227,473.92/x
  3. Step 3: Cross multiply
    390,720.11x = 539,196.35 × 227,473.92
  4. Step 4: Simplify right side
    390,720.11x = 122,653,106,246.82
  5. Step 5: Solve for x
    x = 122,653,106,246.82/390,720.11
  6. Step 6: Final answer
    x = 313,915.52

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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.