Home / 280,073,225.70-420,109,838.55-198,284,455.80

Finding the Fourth Proportional to 280,073,225.70, 420,109,838.55 and 198,284,455.80

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Solution

The fourth proportional to 280,073,225.70, 420,109,838.55 and 198,284,455.80 is: 297,426,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,073,225.70 : 420,109,838.55 = 198,284,455.80 : x
  2. Step 2: Convert to fraction form
    280,073,225.70/420,109,838.55 = 198,284,455.80/x
  3. Step 3: Cross multiply
    280,073,225.70x = 420,109,838.55 × 198,284,455.80
  4. Step 4: Simplify right side
    280,073,225.70x = 83,301,250,713,112,624
  5. Step 5: Solve for x
    x = 83,301,250,713,112,624/280,073,225.70
  6. Step 6: Final answer
    x = 297,426,683.70

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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.