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Finding the Fourth Proportional to 298,911.17, 448,629.93 and 156,857.90

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Solution

The fourth proportional to 298,911.17, 448,629.93 and 156,857.90 is: 235,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,911.17 : 448,629.93 = 156,857.90 : x
  2. Step 2: Convert to fraction form
    298,911.17/448,629.93 = 156,857.90/x
  3. Step 3: Cross multiply
    298,911.17x = 448,629.93 × 156,857.90
  4. Step 4: Simplify right side
    298,911.17x = 70,371,146,453.80
  5. Step 5: Solve for x
    x = 70,371,146,453.80/298,911.17
  6. Step 6: Final answer
    x = 235,424.95

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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.