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Finding the Fourth Proportional to 285,833.90, 393,460.79 and 247,054.07

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Solution

The fourth proportional to 285,833.90, 393,460.79 and 247,054.07 is: 340,078.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,833.90 : 393,460.79 = 247,054.07 : x
  2. Step 2: Convert to fraction form
    285,833.90/393,460.79 = 247,054.07/x
  3. Step 3: Cross multiply
    285,833.90x = 393,460.79 × 247,054.07
  4. Step 4: Simplify right side
    285,833.90x = 97,206,086,352.34
  5. Step 5: Solve for x
    x = 97,206,086,352.34/285,833.90
  6. Step 6: Final answer
    x = 340,078.93

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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.