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Finding the Fourth Proportional to 211,870.17, 292,406.67 and 122,446.17

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Solution

The fourth proportional to 211,870.17, 292,406.67 and 122,446.17 is: 168,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,870.17 : 292,406.67 = 122,446.17 : x
  2. Step 2: Convert to fraction form
    211,870.17/292,406.67 = 122,446.17/x
  3. Step 3: Cross multiply
    211,870.17x = 292,406.67 × 122,446.17
  4. Step 4: Simplify right side
    211,870.17x = 35,804,076,823.95
  5. Step 5: Solve for x
    x = 35,804,076,823.95/211,870.17
  6. Step 6: Final answer
    x = 168,990.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.