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Finding the Fourth Proportional to 293,217.20, 439,307.40 and 260,039.60

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Solution

The fourth proportional to 293,217.20, 439,307.40 and 260,039.60 is: 389,599.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,217.20 : 439,307.40 = 260,039.60 : x
  2. Step 2: Convert to fraction form
    293,217.20/439,307.40 = 260,039.60/x
  3. Step 3: Cross multiply
    293,217.20x = 439,307.40 × 260,039.60
  4. Step 4: Simplify right side
    293,217.20x = 114,237,320,573.04
  5. Step 5: Solve for x
    x = 114,237,320,573.04/293,217.20
  6. Step 6: Final answer
    x = 389,599.66

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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.