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Finding the Fourth Proportional to 140,279.80, 210,420.52 and 46,785.28

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Solution

The fourth proportional to 140,279.80, 210,420.52 and 46,785.28 is: 70,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,279.80 : 210,420.52 = 46,785.28 : x
  2. Step 2: Convert to fraction form
    140,279.80/210,420.52 = 46,785.28/x
  3. Step 3: Cross multiply
    140,279.80x = 210,420.52 × 46,785.28
  4. Step 4: Simplify right side
    140,279.80x = 9,844,582,945.95
  5. Step 5: Solve for x
    x = 9,844,582,945.95/140,279.80
  6. Step 6: Final answer
    x = 70,178.19

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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.