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Finding the Fourth Proportional to 296,799.26, 445,345.05 and 139,000.46

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Solution

The fourth proportional to 296,799.26, 445,345.05 and 139,000.46 is: 208,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,799.26 : 445,345.05 = 139,000.46 : x
  2. Step 2: Convert to fraction form
    296,799.26/445,345.05 = 139,000.46/x
  3. Step 3: Cross multiply
    296,799.26x = 445,345.05 × 139,000.46
  4. Step 4: Simplify right side
    296,799.26x = 61,903,166,808.72
  5. Step 5: Solve for x
    x = 61,903,166,808.72/296,799.26
  6. Step 6: Final answer
    x = 208,569.14

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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.