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Finding the Fourth Proportional to 370,672.30, 555,797.80 and 145,911

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Solution

The fourth proportional to 370,672.30, 555,797.80 and 145,911 is: 218,783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,672.30 : 555,797.80 = 145,911 : x
  2. Step 2: Convert to fraction form
    370,672.30/555,797.80 = 145,911/x
  3. Step 3: Cross multiply
    370,672.30x = 555,797.80 × 145,911
  4. Step 4: Simplify right side
    370,672.30x = 81,097,012,795.80
  5. Step 5: Solve for x
    x = 81,097,012,795.80/370,672.30
  6. Step 6: Final answer
    x = 218,783.58

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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.