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Finding the Fourth Proportional to 614,864.70, 921,859.65 and 235,638.90

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Solution

The fourth proportional to 614,864.70, 921,859.65 and 235,638.90 is: 353,290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,864.70 : 921,859.65 = 235,638.90 : x
  2. Step 2: Convert to fraction form
    614,864.70/921,859.65 = 235,638.90/x
  3. Step 3: Cross multiply
    614,864.70x = 921,859.65 × 235,638.90
  4. Step 4: Simplify right side
    614,864.70x = 217,225,993,880.39
  5. Step 5: Solve for x
    x = 217,225,993,880.39/614,864.70
  6. Step 6: Final answer
    x = 353,290.72

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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.