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Finding the Fourth Proportional to 293,074.60, 439,611.90 and 145,311.40

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Solution

The fourth proportional to 293,074.60, 439,611.90 and 145,311.40 is: 217,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,074.60 : 439,611.90 = 145,311.40 : x
  2. Step 2: Convert to fraction form
    293,074.60/439,611.90 = 145,311.40/x
  3. Step 3: Cross multiply
    293,074.60x = 439,611.90 × 145,311.40
  4. Step 4: Simplify right side
    293,074.60x = 63,880,620,645.66
  5. Step 5: Solve for x
    x = 63,880,620,645.66/293,074.60
  6. Step 6: Final answer
    x = 217,967.10

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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.