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Finding the Fourth Proportional to 316,671.54, 475,026.75 and 139,262.10

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Solution

The fourth proportional to 316,671.54, 475,026.75 and 139,262.10 is: 208,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,671.54 : 475,026.75 = 139,262.10 : x
  2. Step 2: Convert to fraction form
    316,671.54/475,026.75 = 139,262.10/x
  3. Step 3: Cross multiply
    316,671.54x = 475,026.75 × 139,262.10
  4. Step 4: Simplify right side
    316,671.54x = 66,153,222,761.18
  5. Step 5: Solve for x
    x = 66,153,222,761.18/316,671.54
  6. Step 6: Final answer
    x = 208,901.70

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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.