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Finding the Fourth Proportional to 339,995.71, 510,066.93 and 103,357.45

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Solution

The fourth proportional to 339,995.71, 510,066.93 and 103,357.45 is: 155,058.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,995.71 : 510,066.93 = 103,357.45 : x
  2. Step 2: Convert to fraction form
    339,995.71/510,066.93 = 103,357.45/x
  3. Step 3: Cross multiply
    339,995.71x = 510,066.93 × 103,357.45
  4. Step 4: Simplify right side
    339,995.71x = 52,719,217,214.13
  5. Step 5: Solve for x
    x = 52,719,217,214.13/339,995.71
  6. Step 6: Final answer
    x = 155,058.48

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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.