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Finding the Fourth Proportional to 339,507.04, 511,291.65 and 309,240.32

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Solution

The fourth proportional to 339,507.04, 511,291.65 and 309,240.32 is: 465,710.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,507.04 : 511,291.65 = 309,240.32 : x
  2. Step 2: Convert to fraction form
    339,507.04/511,291.65 = 309,240.32/x
  3. Step 3: Cross multiply
    339,507.04x = 511,291.65 × 309,240.32
  4. Step 4: Simplify right side
    339,507.04x = 158,111,991,913.13
  5. Step 5: Solve for x
    x = 158,111,991,913.13/339,507.04
  6. Step 6: Final answer
    x = 465,710.50

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1.5x scale

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.