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Finding the Fourth Proportional to 602,830.20, 905,138.10 and 337,121.40

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Solution

The fourth proportional to 602,830.20, 905,138.10 and 337,121.40 is: 506,181.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,830.20 : 905,138.10 = 337,121.40 : x
  2. Step 2: Convert to fraction form
    602,830.20/905,138.10 = 337,121.40/x
  3. Step 3: Cross multiply
    602,830.20x = 905,138.10 × 337,121.40
  4. Step 4: Simplify right side
    602,830.20x = 305,141,423,465.34
  5. Step 5: Solve for x
    x = 305,141,423,465.34/602,830.20
  6. Step 6: Final answer
    x = 506,181.38

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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.