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Finding the Fourth Proportional to 286,765.60, 429,273.60 and 255,272.80

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Solution

The fourth proportional to 286,765.60, 429,273.60 and 255,272.80 is: 382,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,765.60 : 429,273.60 = 255,272.80 : x
  2. Step 2: Convert to fraction form
    286,765.60/429,273.60 = 255,272.80/x
  3. Step 3: Cross multiply
    286,765.60x = 429,273.60 × 255,272.80
  4. Step 4: Simplify right side
    286,765.60x = 109,581,873,838.08
  5. Step 5: Solve for x
    x = 109,581,873,838.08/286,765.60
  6. Step 6: Final answer
    x = 382,130.47

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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.