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Finding the Fourth Proportional to 296,959.47, 445,227.66 and 139,101.81

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Solution

The fourth proportional to 296,959.47, 445,227.66 and 139,101.81 is: 208,553.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,959.47 : 445,227.66 = 139,101.81 : x
  2. Step 2: Convert to fraction form
    296,959.47/445,227.66 = 139,101.81/x
  3. Step 3: Cross multiply
    296,959.47x = 445,227.66 × 139,101.81
  4. Step 4: Simplify right side
    296,959.47x = 61,931,973,368.06
  5. Step 5: Solve for x
    x = 61,931,973,368.06/296,959.47
  6. Step 6: Final answer
    x = 208,553.62

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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.