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Finding the Fourth Proportional to 371,308.20, 512,392.06 and 210,159.79

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Solution

The fourth proportional to 371,308.20, 512,392.06 and 210,159.79 is: 290,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,308.20 : 512,392.06 = 210,159.79 : x
  2. Step 2: Convert to fraction form
    371,308.20/512,392.06 = 210,159.79/x
  3. Step 3: Cross multiply
    371,308.20x = 512,392.06 × 210,159.79
  4. Step 4: Simplify right side
    371,308.20x = 107,684,209,796.35
  5. Step 5: Solve for x
    x = 107,684,209,796.35/371,308.20
  6. Step 6: Final answer
    x = 290,013.01

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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.