Home / 312,889,778.64-431,832,880.26-187,447,340.52

Finding the Fourth Proportional to 312,889,778.64, 431,832,880.26 and 187,447,340.52

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Solution

The fourth proportional to 312,889,778.64, 431,832,880.26 and 187,447,340.52 is: 258,704,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,889,778.64 : 431,832,880.26 = 187,447,340.52 : x
  2. Step 2: Convert to fraction form
    312,889,778.64/431,832,880.26 = 187,447,340.52/x
  3. Step 3: Cross multiply
    312,889,778.64x = 431,832,880.26 × 187,447,340.52
  4. Step 4: Simplify right side
    312,889,778.64x = 80,945,924,953,828,608
  5. Step 5: Solve for x
    x = 80,945,924,953,828,608/312,889,778.64
  6. Step 6: Final answer
    x = 258,704,280.16

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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.