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Finding the Fourth Proportional to 152,309.77, 228,458.98 and 39,988.96

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Solution

The fourth proportional to 152,309.77, 228,458.98 and 39,988.96 is: 59,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,309.77 : 228,458.98 = 39,988.96 : x
  2. Step 2: Convert to fraction form
    152,309.77/228,458.98 = 39,988.96/x
  3. Step 3: Cross multiply
    152,309.77x = 228,458.98 × 39,988.96
  4. Step 4: Simplify right side
    152,309.77x = 9,135,836,491.70
  5. Step 5: Solve for x
    x = 9,135,836,491.70/152,309.77
  6. Step 6: Final answer
    x = 59,981.95

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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.