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Finding the Fourth Proportional to 268,670.61, 370,765.47 and 147,809.31

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Solution

The fourth proportional to 268,670.61, 370,765.47 and 147,809.31 is: 203,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,670.61 : 370,765.47 = 147,809.31 : x
  2. Step 2: Convert to fraction form
    268,670.61/370,765.47 = 147,809.31/x
  3. Step 3: Cross multiply
    268,670.61x = 370,765.47 × 147,809.31
  4. Step 4: Simplify right side
    268,670.61x = 54,802,588,292.53
  5. Step 5: Solve for x
    x = 54,802,588,292.53/268,670.61
  6. Step 6: Final answer
    x = 203,976.86

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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.