Home / 371,322.45-512,387.57-210,149.44

Finding the Fourth Proportional to 371,322.45, 512,387.57 and 210,149.44

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Solution

The fourth proportional to 371,322.45, 512,387.57 and 210,149.44 is: 289,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,322.45 : 512,387.57 = 210,149.44 : x
  2. Step 2: Convert to fraction form
    371,322.45/512,387.57 = 210,149.44/x
  3. Step 3: Cross multiply
    371,322.45x = 512,387.57 × 210,149.44
  4. Step 4: Simplify right side
    371,322.45x = 107,677,960,898.46
  5. Step 5: Solve for x
    x = 107,677,960,898.46/371,322.45
  6. Step 6: Final answer
    x = 289,985.05

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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.