Home / 213,937,281.72-321,089,164.02-212,326,949.88

Finding the Fourth Proportional to 213,937,281.72, 321,089,164.02 and 212,326,949.88

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Solution

The fourth proportional to 213,937,281.72, 321,089,164.02 and 212,326,949.88 is: 318,672,286.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,937,281.72 : 321,089,164.02 = 212,326,949.88 : x
  2. Step 2: Convert to fraction form
    213,937,281.72/321,089,164.02 = 212,326,949.88/x
  3. Step 3: Cross multiply
    213,937,281.72x = 321,089,164.02 × 212,326,949.88
  4. Step 4: Simplify right side
    213,937,281.72x = 68,175,882,835,885,632
  5. Step 5: Solve for x
    x = 68,175,882,835,885,632/213,937,281.72
  6. Step 6: Final answer
    x = 318,672,286.98

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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.