Home / 213,376,442.30-320,303,811.90-165,068,455.40

Finding the Fourth Proportional to 213,376,442.30, 320,303,811.90 and 165,068,455.40

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Solution

The fourth proportional to 213,376,442.30, 320,303,811.90 and 165,068,455.40 is: 247,787,688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,376,442.30 : 320,303,811.90 = 165,068,455.40 : x
  2. Step 2: Convert to fraction form
    213,376,442.30/320,303,811.90 = 165,068,455.40/x
  3. Step 3: Cross multiply
    213,376,442.30x = 320,303,811.90 × 165,068,455.40
  4. Step 4: Simplify right side
    213,376,442.30x = 52,872,055,489,065,136
  5. Step 5: Solve for x
    x = 52,872,055,489,065,136/213,376,442.30
  6. Step 6: Final answer
    x = 247,787,688.83

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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.