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Finding the Fourth Proportional to 286,573.60, 429,860.40 and 262,079.20

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Solution

The fourth proportional to 286,573.60, 429,860.40 and 262,079.20 is: 393,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,573.60 : 429,860.40 = 262,079.20 : x
  2. Step 2: Convert to fraction form
    286,573.60/429,860.40 = 262,079.20/x
  3. Step 3: Cross multiply
    286,573.60x = 429,860.40 × 262,079.20
  4. Step 4: Simplify right side
    286,573.60x = 112,657,469,743.68
  5. Step 5: Solve for x
    x = 112,657,469,743.68/286,573.60
  6. Step 6: Final answer
    x = 393,118.80

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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.