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Finding the Fourth Proportional to 299,148.50, 448,471.07 and 139,143.17

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Solution

The fourth proportional to 299,148.50, 448,471.07 and 139,143.17 is: 208,597.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,148.50 : 448,471.07 = 139,143.17 : x
  2. Step 2: Convert to fraction form
    299,148.50/448,471.07 = 139,143.17/x
  3. Step 3: Cross multiply
    299,148.50x = 448,471.07 × 139,143.17
  4. Step 4: Simplify right side
    299,148.50x = 62,401,684,090.74
  5. Step 5: Solve for x
    x = 62,401,684,090.74/299,148.50
  6. Step 6: Final answer
    x = 208,597.68

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1.5x scale

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.