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Finding the Fourth Proportional to 317,897.55, 476,846.55 and 81,240.48

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Solution

The fourth proportional to 317,897.55, 476,846.55 and 81,240.48 is: 121,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,897.55 : 476,846.55 = 81,240.48 : x
  2. Step 2: Convert to fraction form
    317,897.55/476,846.55 = 81,240.48/x
  3. Step 3: Cross multiply
    317,897.55x = 476,846.55 × 81,240.48
  4. Step 4: Simplify right side
    317,897.55x = 38,739,242,608.34
  5. Step 5: Solve for x
    x = 38,739,242,608.34/317,897.55
  6. Step 6: Final answer
    x = 121,860.78

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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.