Home / 318,816,103.20-478,224,154.80-221,566,336.80

Finding the Fourth Proportional to 318,816,103.20, 478,224,154.80 and 221,566,336.80

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Solution

The fourth proportional to 318,816,103.20, 478,224,154.80 and 221,566,336.80 is: 332,349,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,816,103.20 : 478,224,154.80 = 221,566,336.80 : x
  2. Step 2: Convert to fraction form
    318,816,103.20/478,224,154.80 = 221,566,336.80/x
  3. Step 3: Cross multiply
    318,816,103.20x = 478,224,154.80 × 221,566,336.80
  4. Step 4: Simplify right side
    318,816,103.20x = 105,958,374,148,312,144
  5. Step 5: Solve for x
    x = 105,958,374,148,312,144/318,816,103.20
  6. Step 6: Final answer
    x = 332,349,505.20

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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.