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Finding the Fourth Proportional to 335,036.20, 502,643.40 and 145,415.20

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Solution

The fourth proportional to 335,036.20, 502,643.40 and 145,415.20 is: 218,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,036.20 : 502,643.40 = 145,415.20 : x
  2. Step 2: Convert to fraction form
    335,036.20/502,643.40 = 145,415.20/x
  3. Step 3: Cross multiply
    335,036.20x = 502,643.40 × 145,415.20
  4. Step 4: Simplify right side
    335,036.20x = 73,091,990,539.68
  5. Step 5: Solve for x
    x = 73,091,990,539.68/335,036.20
  6. Step 6: Final answer
    x = 218,161.47

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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.