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Finding the Fourth Proportional to 205,390.20, 308,085.30 and 94,798.20

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Solution

The fourth proportional to 205,390.20, 308,085.30 and 94,798.20 is: 142,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,390.20 : 308,085.30 = 94,798.20 : x
  2. Step 2: Convert to fraction form
    205,390.20/308,085.30 = 94,798.20/x
  3. Step 3: Cross multiply
    205,390.20x = 308,085.30 × 94,798.20
  4. Step 4: Simplify right side
    205,390.20x = 29,205,931,886.46
  5. Step 5: Solve for x
    x = 29,205,931,886.46/205,390.20
  6. Step 6: Final answer
    x = 142,197.30

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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.