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Finding the Fourth Proportional to 212,638.88, 318,987.48 and 62,890.94

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Solution

The fourth proportional to 212,638.88, 318,987.48 and 62,890.94 is: 94,345.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,638.88 : 318,987.48 = 62,890.94 : x
  2. Step 2: Convert to fraction form
    212,638.88/318,987.48 = 62,890.94/x
  3. Step 3: Cross multiply
    212,638.88x = 318,987.48 × 62,890.94
  4. Step 4: Simplify right side
    212,638.88x = 20,061,422,465.43
  5. Step 5: Solve for x
    x = 20,061,422,465.43/212,638.88
  6. Step 6: Final answer
    x = 94,345.03

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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.