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Finding the Fourth Proportional to 318,740.83, 439,861.34 and 175,500.90

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Solution

The fourth proportional to 318,740.83, 439,861.34 and 175,500.90 is: 242,190.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,740.83 : 439,861.34 = 175,500.90 : x
  2. Step 2: Convert to fraction form
    318,740.83/439,861.34 = 175,500.90/x
  3. Step 3: Cross multiply
    318,740.83x = 439,861.34 × 175,500.90
  4. Step 4: Simplify right side
    318,740.83x = 77,196,061,483.96
  5. Step 5: Solve for x
    x = 77,196,061,483.96/318,740.83
  6. Step 6: Final answer
    x = 242,190.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.