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Finding the Fourth Proportional to 604,830.20, 907,245.30 and 205,921.40

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Solution

The fourth proportional to 604,830.20, 907,245.30 and 205,921.40 is: 308,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,830.20 : 907,245.30 = 205,921.40 : x
  2. Step 2: Convert to fraction form
    604,830.20/907,245.30 = 205,921.40/x
  3. Step 3: Cross multiply
    604,830.20x = 907,245.30 × 205,921.40
  4. Step 4: Simplify right side
    604,830.20x = 186,821,222,319.42
  5. Step 5: Solve for x
    x = 186,821,222,319.42/604,830.20
  6. Step 6: Final answer
    x = 308,882.10

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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.