Home / 262,286,198.10-393,402,336.21-87,390,342

Finding the Fourth Proportional to 262,286,198.10, 393,402,336.21 and 87,390,342

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Solution

The fourth proportional to 262,286,198.10, 393,402,336.21 and 87,390,342 is: 131,076,529.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,286,198.10 : 393,402,336.21 = 87,390,342 : x
  2. Step 2: Convert to fraction form
    262,286,198.10/393,402,336.21 = 87,390,342/x
  3. Step 3: Cross multiply
    262,286,198.10x = 393,402,336.21 × 87,390,342
  4. Step 4: Simplify right side
    262,286,198.10x = 34,379,564,704,990,880
  5. Step 5: Solve for x
    x = 34,379,564,704,990,880/262,286,198.10
  6. Step 6: Final answer
    x = 131,076,529.97

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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.