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Finding the Fourth Proportional to 370,670.30, 555,794.81 and 145,909

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Solution

The fourth proportional to 370,670.30, 555,794.81 and 145,909 is: 218,780.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,670.30 : 555,794.81 = 145,909 : x
  2. Step 2: Convert to fraction form
    370,670.30/555,794.81 = 145,909/x
  3. Step 3: Cross multiply
    370,670.30x = 555,794.81 × 145,909
  4. Step 4: Simplify right side
    370,670.30x = 81,095,464,932.29
  5. Step 5: Solve for x
    x = 81,095,464,932.29/370,670.30
  6. Step 6: Final answer
    x = 218,780.58

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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.