Home / 353,905.84-488,867.80-282,784.56

Finding the Fourth Proportional to 353,905.84, 488,867.80 and 282,784.56

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Solution

The fourth proportional to 353,905.84, 488,867.80 and 282,784.56 is: 390,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,905.84 : 488,867.80 = 282,784.56 : x
  2. Step 2: Convert to fraction form
    353,905.84/488,867.80 = 282,784.56/x
  3. Step 3: Cross multiply
    353,905.84x = 488,867.80 × 282,784.56
  4. Step 4: Simplify right side
    353,905.84x = 138,244,265,721.17
  5. Step 5: Solve for x
    x = 138,244,265,721.17/353,905.84
  6. Step 6: Final answer
    x = 390,624.43

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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.