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Finding the Fourth Proportional to 608,421.80, 912,695.30 and 229,661.56

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Solution

The fourth proportional to 608,421.80, 912,695.30 and 229,661.56 is: 344,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,421.80 : 912,695.30 = 229,661.56 : x
  2. Step 2: Convert to fraction form
    608,421.80/912,695.30 = 229,661.56/x
  3. Step 3: Cross multiply
    608,421.80x = 912,695.30 × 229,661.56
  4. Step 4: Simplify right side
    608,421.80x = 209,611,026,402.67
  5. Step 5: Solve for x
    x = 209,611,026,402.67/608,421.80
  6. Step 6: Final answer
    x = 344,515.97

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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.