Home / 280,219,975.30-420,399,341.07-83,482,509.70

Finding the Fourth Proportional to 280,219,975.30, 420,399,341.07 and 83,482,509.70

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Solution

The fourth proportional to 280,219,975.30, 420,399,341.07 and 83,482,509.70 is: 125,244,433.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,219,975.30 : 420,399,341.07 = 83,482,509.70 : x
  2. Step 2: Convert to fraction form
    280,219,975.30/420,399,341.07 = 83,482,509.70/x
  3. Step 3: Cross multiply
    280,219,975.30x = 420,399,341.07 × 83,482,509.70
  4. Step 4: Simplify right side
    280,219,975.30x = 35,095,992,068,749,884
  5. Step 5: Solve for x
    x = 35,095,992,068,749,884/280,219,975.30
  6. Step 6: Final answer
    x = 125,244,433.52

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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.