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Finding the Fourth Proportional to 212,416.60, 318,624.90 and 175,091.80

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Solution

The fourth proportional to 212,416.60, 318,624.90 and 175,091.80 is: 262,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,416.60 : 318,624.90 = 175,091.80 : x
  2. Step 2: Convert to fraction form
    212,416.60/318,624.90 = 175,091.80/x
  3. Step 3: Cross multiply
    212,416.60x = 318,624.90 × 175,091.80
  4. Step 4: Simplify right side
    212,416.60x = 55,788,607,265.82
  5. Step 5: Solve for x
    x = 55,788,607,265.82/212,416.60
  6. Step 6: Final answer
    x = 262,637.70

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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.