Home / 280,155,234.45-420,870,580.87-202,671,136.65

Finding the Fourth Proportional to 280,155,234.45, 420,870,580.87 and 202,671,136.65

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Solution

The fourth proportional to 280,155,234.45, 420,870,580.87 and 202,671,136.65 is: 304,468,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,155,234.45 : 420,870,580.87 = 202,671,136.65 : x
  2. Step 2: Convert to fraction form
    280,155,234.45/420,870,580.87 = 202,671,136.65/x
  3. Step 3: Cross multiply
    280,155,234.45x = 420,870,580.87 × 202,671,136.65
  4. Step 4: Simplify right side
    280,155,234.45x = 85,298,319,007,468,656
  5. Step 5: Solve for x
    x = 85,298,319,007,468,656/280,155,234.45
  6. Step 6: Final answer
    x = 304,468,053.84

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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.