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Finding the Fourth Proportional to 508,255.62, 761,421.14 and 339,266.40

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Solution

The fourth proportional to 508,255.62, 761,421.14 and 339,266.40 is: 508,257.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,255.62 : 761,421.14 = 339,266.40 : x
  2. Step 2: Convert to fraction form
    508,255.62/761,421.14 = 339,266.40/x
  3. Step 3: Cross multiply
    508,255.62x = 761,421.14 × 339,266.40
  4. Step 4: Simplify right side
    508,255.62x = 258,324,609,051.70
  5. Step 5: Solve for x
    x = 258,324,609,051.70/508,255.62
  6. Step 6: Final answer
    x = 508,257.26

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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.