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Finding the Fourth Proportional to 335,388.60, 502,208.10 and 319,642.20

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Solution

The fourth proportional to 335,388.60, 502,208.10 and 319,642.20 is: 478,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,388.60 : 502,208.10 = 319,642.20 : x
  2. Step 2: Convert to fraction form
    335,388.60/502,208.10 = 319,642.20/x
  3. Step 3: Cross multiply
    335,388.60x = 502,208.10 × 319,642.20
  4. Step 4: Simplify right side
    335,388.60x = 160,526,901,941.82
  5. Step 5: Solve for x
    x = 160,526,901,941.82/335,388.60
  6. Step 6: Final answer
    x = 478,629.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.