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Finding the Fourth Proportional to 385,548.79, 577,279.91 and 272,764.39

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Solution

The fourth proportional to 385,548.79, 577,279.91 and 272,764.39 is: 408,408.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,548.79 : 577,279.91 = 272,764.39 : x
  2. Step 2: Convert to fraction form
    385,548.79/577,279.91 = 272,764.39/x
  3. Step 3: Cross multiply
    385,548.79x = 577,279.91 × 272,764.39
  4. Step 4: Simplify right side
    385,548.79x = 157,461,401,146.58
  5. Step 5: Solve for x
    x = 157,461,401,146.58/385,548.79
  6. Step 6: Final answer
    x = 408,408.50

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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.