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Finding the Fourth Proportional to 371,275.64, 512,272.57 and 210,130.70

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Solution

The fourth proportional to 371,275.64, 512,272.57 and 210,130.70 is: 289,930.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,275.64 : 512,272.57 = 210,130.70 : x
  2. Step 2: Convert to fraction form
    371,275.64/512,272.57 = 210,130.70/x
  3. Step 3: Cross multiply
    371,275.64x = 512,272.57 × 210,130.70
  4. Step 4: Simplify right side
    371,275.64x = 107,644,191,163.54
  5. Step 5: Solve for x
    x = 107,644,191,163.54/371,275.64
  6. Step 6: Final answer
    x = 289,930.66

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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.