Home / 467,815.10-645,657.64-307,136.22

Finding the Fourth Proportional to 467,815.10, 645,657.64 and 307,136.22

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Solution

The fourth proportional to 467,815.10, 645,657.64 and 307,136.22 is: 423,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,815.10 : 645,657.64 = 307,136.22 : x
  2. Step 2: Convert to fraction form
    467,815.10/645,657.64 = 307,136.22/x
  3. Step 3: Cross multiply
    467,815.10x = 645,657.64 × 307,136.22
  4. Step 4: Simplify right side
    467,815.10x = 198,304,846,963.72
  5. Step 5: Solve for x
    x = 198,304,846,963.72/467,815.10
  6. Step 6: Final answer
    x = 423,895.78

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1.5x scale

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.