Home / 285,370,423.66-393,813,200.19-154,990,231.66

Finding the Fourth Proportional to 285,370,423.66, 393,813,200.19 and 154,990,231.66

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Solution

The fourth proportional to 285,370,423.66, 393,813,200.19 and 154,990,231.66 is: 213,887,614.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,370,423.66 : 393,813,200.19 = 154,990,231.66 : x
  2. Step 2: Convert to fraction form
    285,370,423.66/393,813,200.19 = 154,990,231.66/x
  3. Step 3: Cross multiply
    285,370,423.66x = 393,813,200.19 × 154,990,231.66
  4. Step 4: Simplify right side
    285,370,423.66x = 61,037,199,128,214,056
  5. Step 5: Solve for x
    x = 61,037,199,128,214,056/285,370,423.66
  6. Step 6: Final answer
    x = 213,887,614.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.