Home / 280,073,200.20-420,109,800.30-198,284,430.30

Finding the Fourth Proportional to 280,073,200.20, 420,109,800.30 and 198,284,430.30

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Solution

The fourth proportional to 280,073,200.20, 420,109,800.30 and 198,284,430.30 is: 297,426,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,073,200.20 : 420,109,800.30 = 198,284,430.30 : x
  2. Step 2: Convert to fraction form
    280,073,200.20/420,109,800.30 = 198,284,430.30/x
  3. Step 3: Cross multiply
    280,073,200.20x = 420,109,800.30 × 198,284,430.30
  4. Step 4: Simplify right side
    280,073,200.20x = 83,301,232,415,932,272
  5. Step 5: Solve for x
    x = 83,301,232,415,932,272/280,073,200.20
  6. Step 6: Final answer
    x = 297,426,645.45

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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.