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Finding the Fourth Proportional to 339,506.79, 511,291.27 and 309,240.07

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Solution

The fourth proportional to 339,506.79, 511,291.27 and 309,240.07 is: 465,710.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,506.79 : 511,291.27 = 309,240.07 : x
  2. Step 2: Convert to fraction form
    339,506.79/511,291.27 = 309,240.07/x
  3. Step 3: Cross multiply
    339,506.79x = 511,291.27 × 309,240.07
  4. Step 4: Simplify right side
    339,506.79x = 158,111,748,125.19
  5. Step 5: Solve for x
    x = 158,111,748,125.19/339,506.79
  6. Step 6: Final answer
    x = 465,710.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.