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Finding the Fourth Proportional to 372,008.70, 513,349.04 and 208,656.20

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Solution

The fourth proportional to 372,008.70, 513,349.04 and 208,656.20 is: 287,932.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,008.70 : 513,349.04 = 208,656.20 : x
  2. Step 2: Convert to fraction form
    372,008.70/513,349.04 = 208,656.20/x
  3. Step 3: Cross multiply
    372,008.70x = 513,349.04 × 208,656.20
  4. Step 4: Simplify right side
    372,008.70x = 107,113,461,765.06
  5. Step 5: Solve for x
    x = 107,113,461,765.06/372,008.70
  6. Step 6: Final answer
    x = 287,932.68

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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.