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Finding the Fourth Proportional to 309,502.58, 427,290.53 and 236,771.46

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Solution

The fourth proportional to 309,502.58, 427,290.53 and 236,771.46 is: 326,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,502.58 : 427,290.53 = 236,771.46 : x
  2. Step 2: Convert to fraction form
    309,502.58/427,290.53 = 236,771.46/x
  3. Step 3: Cross multiply
    309,502.58x = 427,290.53 × 236,771.46
  4. Step 4: Simplify right side
    309,502.58x = 101,170,201,448.42
  5. Step 5: Solve for x
    x = 101,170,201,448.42/309,502.58
  6. Step 6: Final answer
    x = 326,880.00

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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.