Home / 212,585,139.40-318,877,709.10-161,188,889.80

Finding the Fourth Proportional to 212,585,139.40, 318,877,709.10 and 161,188,889.80

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Solution

The fourth proportional to 212,585,139.40, 318,877,709.10 and 161,188,889.80 is: 241,783,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,585,139.40 : 318,877,709.10 = 161,188,889.80 : x
  2. Step 2: Convert to fraction form
    212,585,139.40/318,877,709.10 = 161,188,889.80/x
  3. Step 3: Cross multiply
    212,585,139.40x = 318,877,709.10 × 161,188,889.80
  4. Step 4: Simplify right side
    212,585,139.40x = 51,399,543,911,796,368
  5. Step 5: Solve for x
    x = 51,399,543,911,796,368/212,585,139.40
  6. Step 6: Final answer
    x = 241,783,334.70

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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.