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Finding the Fourth Proportional to 296,961.40, 445,442.10 and 139,497.40

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Solution

The fourth proportional to 296,961.40, 445,442.10 and 139,497.40 is: 209,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,961.40 : 445,442.10 = 139,497.40 : x
  2. Step 2: Convert to fraction form
    296,961.40/445,442.10 = 139,497.40/x
  3. Step 3: Cross multiply
    296,961.40x = 445,442.10 × 139,497.40
  4. Step 4: Simplify right side
    296,961.40x = 62,138,014,800.54
  5. Step 5: Solve for x
    x = 62,138,014,800.54/296,961.40
  6. Step 6: Final answer
    x = 209,246.10

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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.