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Finding the Fourth Proportional to 353,421.69, 487,724.06 and 192,277.90

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Solution

The fourth proportional to 353,421.69, 487,724.06 and 192,277.90 is: 265,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,421.69 : 487,724.06 = 192,277.90 : x
  2. Step 2: Convert to fraction form
    353,421.69/487,724.06 = 192,277.90/x
  3. Step 3: Cross multiply
    353,421.69x = 487,724.06 × 192,277.90
  4. Step 4: Simplify right side
    353,421.69x = 93,778,558,036.27
  5. Step 5: Solve for x
    x = 93,778,558,036.27/353,421.69
  6. Step 6: Final answer
    x = 265,344.66

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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.