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Finding the Fourth Proportional to 339,148.70, 508,723.05 and 260,659.10

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Solution

The fourth proportional to 339,148.70, 508,723.05 and 260,659.10 is: 390,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,148.70 : 508,723.05 = 260,659.10 : x
  2. Step 2: Convert to fraction form
    339,148.70/508,723.05 = 260,659.10/x
  3. Step 3: Cross multiply
    339,148.70x = 508,723.05 × 260,659.10
  4. Step 4: Simplify right side
    339,148.70x = 132,603,292,362.26
  5. Step 5: Solve for x
    x = 132,603,292,362.26/339,148.70
  6. Step 6: Final answer
    x = 390,988.65

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Similar ratio
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1.5x scale

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.