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Finding the Fourth Proportional to 310,031.63, 465,049.97 and 85,404.45

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Solution

The fourth proportional to 310,031.63, 465,049.97 and 85,404.45 is: 128,107.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,031.63 : 465,049.97 = 85,404.45 : x
  2. Step 2: Convert to fraction form
    310,031.63/465,049.97 = 85,404.45/x
  3. Step 3: Cross multiply
    310,031.63x = 465,049.97 × 85,404.45
  4. Step 4: Simplify right side
    310,031.63x = 39,717,336,483.34
  5. Step 5: Solve for x
    x = 39,717,336,483.34/310,031.63
  6. Step 6: Final answer
    x = 128,107.37

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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.