Home / 286,897.20-429,827.40-253,719.60

Finding the Fourth Proportional to 286,897.20, 429,827.40 and 253,719.60

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Solution

The fourth proportional to 286,897.20, 429,827.40 and 253,719.60 is: 380,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,897.20 : 429,827.40 = 253,719.60 : x
  2. Step 2: Convert to fraction form
    286,897.20/429,827.40 = 253,719.60/x
  3. Step 3: Cross multiply
    286,897.20x = 429,827.40 × 253,719.60
  4. Step 4: Simplify right side
    286,897.20x = 109,055,635,997.04
  5. Step 5: Solve for x
    x = 109,055,635,997.04/286,897.20
  6. Step 6: Final answer
    x = 380,120.95

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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.