Home / 318,816,095.20-478,224,142.80-221,566,328.80

Finding the Fourth Proportional to 318,816,095.20, 478,224,142.80 and 221,566,328.80

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Solution

The fourth proportional to 318,816,095.20, 478,224,142.80 and 221,566,328.80 is: 332,349,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,816,095.20 : 478,224,142.80 = 221,566,328.80 : x
  2. Step 2: Convert to fraction form
    318,816,095.20/478,224,142.80 = 221,566,328.80/x
  3. Step 3: Cross multiply
    318,816,095.20x = 478,224,142.80 × 221,566,328.80
  4. Step 4: Simplify right side
    318,816,095.20x = 105,958,367,663,722,960
  5. Step 5: Solve for x
    x = 105,958,367,663,722,960/318,816,095.20
  6. Step 6: Final answer
    x = 332,349,493.20

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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.