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Finding the Fourth Proportional to 371,308.71, 512,392.76 and 210,160.30

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Solution

The fourth proportional to 371,308.71, 512,392.76 and 210,160.30 is: 290,013.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,308.71 : 512,392.76 = 210,160.30 : x
  2. Step 2: Convert to fraction form
    371,308.71/512,392.76 = 210,160.30/x
  3. Step 3: Cross multiply
    371,308.71x = 512,392.76 × 210,160.30
  4. Step 4: Simplify right side
    371,308.71x = 107,684,612,546.66
  5. Step 5: Solve for x
    x = 107,684,612,546.66/371,308.71
  6. Step 6: Final answer
    x = 290,013.70

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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.