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Finding the Fourth Proportional to 369,693.86, 554,540.82 and 89,211.11

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Solution

The fourth proportional to 369,693.86, 554,540.82 and 89,211.11 is: 133,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,693.86 : 554,540.82 = 89,211.11 : x
  2. Step 2: Convert to fraction form
    369,693.86/554,540.82 = 89,211.11/x
  3. Step 3: Cross multiply
    369,693.86x = 554,540.82 × 89,211.11
  4. Step 4: Simplify right side
    369,693.86x = 49,471,199,319.81
  5. Step 5: Solve for x
    x = 49,471,199,319.81/369,693.86
  6. Step 6: Final answer
    x = 133,816.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.