Home / 208,436.76-312,622.47-66,263.40

Finding the Fourth Proportional to 208,436.76, 312,622.47 and 66,263.40

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Solution

The fourth proportional to 208,436.76, 312,622.47 and 66,263.40 is: 99,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,436.76 : 312,622.47 = 66,263.40 : x
  2. Step 2: Convert to fraction form
    208,436.76/312,622.47 = 66,263.40/x
  3. Step 3: Cross multiply
    208,436.76x = 312,622.47 × 66,263.40
  4. Step 4: Simplify right side
    208,436.76x = 20,715,427,778.60
  5. Step 5: Solve for x
    x = 20,715,427,778.60/208,436.76
  6. Step 6: Final answer
    x = 99,384.71

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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.