Home / 221,870,800.80-306,170,501.85-121,397,063.40

Finding the Fourth Proportional to 221,870,800.80, 306,170,501.85 and 121,397,063.40

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Solution

The fourth proportional to 221,870,800.80, 306,170,501.85 and 121,397,063.40 is: 167,521,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,870,800.80 : 306,170,501.85 = 121,397,063.40 : x
  2. Step 2: Convert to fraction form
    221,870,800.80/306,170,501.85 = 121,397,063.40/x
  3. Step 3: Cross multiply
    221,870,800.80x = 306,170,501.85 × 121,397,063.40
  4. Step 4: Simplify right side
    221,870,800.80x = 37,168,199,824,294,272
  5. Step 5: Solve for x
    x = 37,168,199,824,294,272/221,870,800.80
  6. Step 6: Final answer
    x = 167,521,817.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.