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Finding the Fourth Proportional to 353,368.36, 487,661.34 and 202,494.52

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Solution

The fourth proportional to 353,368.36, 487,661.34 and 202,494.52 is: 279,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,368.36 : 487,661.34 = 202,494.52 : x
  2. Step 2: Convert to fraction form
    353,368.36/487,661.34 = 202,494.52/x
  3. Step 3: Cross multiply
    353,368.36x = 487,661.34 × 202,494.52
  4. Step 4: Simplify right side
    353,368.36x = 98,748,748,965.86
  5. Step 5: Solve for x
    x = 98,748,748,965.86/353,368.36
  6. Step 6: Final answer
    x = 279,449.89

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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.