Home / 280,155,234.71-420,870,581.25-202,671,136.91

Finding the Fourth Proportional to 280,155,234.71, 420,870,581.25 and 202,671,136.91

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Solution

The fourth proportional to 280,155,234.71, 420,870,581.25 and 202,671,136.91 is: 304,468,054.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,155,234.71 : 420,870,581.25 = 202,671,136.91 : x
  2. Step 2: Convert to fraction form
    280,155,234.71/420,870,581.25 = 202,671,136.91/x
  3. Step 3: Cross multiply
    280,155,234.71x = 420,870,581.25 × 202,671,136.91
  4. Step 4: Simplify right side
    280,155,234.71x = 85,298,319,190,792,320
  5. Step 5: Solve for x
    x = 85,298,319,190,792,320/280,155,234.71
  6. Step 6: Final answer
    x = 304,468,054.22

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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.