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Finding the Fourth Proportional to 612,624.90, 918,561.03 and 238,211.46

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Solution

The fourth proportional to 612,624.90, 918,561.03 and 238,211.46 is: 357,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,624.90 : 918,561.03 = 238,211.46 : x
  2. Step 2: Convert to fraction form
    612,624.90/918,561.03 = 238,211.46/x
  3. Step 3: Cross multiply
    612,624.90x = 918,561.03 × 238,211.46
  4. Step 4: Simplify right side
    612,624.90x = 218,811,764,055.40
  5. Step 5: Solve for x
    x = 218,811,764,055.40/612,624.90
  6. Step 6: Final answer
    x = 357,170.86

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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.