Home / 216,439,821.52-298,678,948.75-117,318,440.72

Finding the Fourth Proportional to 216,439,821.52, 298,678,948.75 and 117,318,440.72

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Solution

The fourth proportional to 216,439,821.52, 298,678,948.75 and 117,318,440.72 is: 161,895,109.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,439,821.52 : 298,678,948.75 = 117,318,440.72 : x
  2. Step 2: Convert to fraction form
    216,439,821.52/298,678,948.75 = 117,318,440.72/x
  3. Step 3: Cross multiply
    216,439,821.52x = 298,678,948.75 × 117,318,440.72
  4. Step 4: Simplify right side
    216,439,821.52x = 35,040,548,543,238,792
  5. Step 5: Solve for x
    x = 35,040,548,543,238,792/216,439,821.52
  6. Step 6: Final answer
    x = 161,895,109.21

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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.