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Finding the Fourth Proportional to 286,572.20, 429,858.30 and 263,827.40

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Solution

The fourth proportional to 286,572.20, 429,858.30 and 263,827.40 is: 395,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,572.20 : 429,858.30 = 263,827.40 : x
  2. Step 2: Convert to fraction form
    286,572.20/429,858.30 = 263,827.40/x
  3. Step 3: Cross multiply
    286,572.20x = 429,858.30 × 263,827.40
  4. Step 4: Simplify right side
    286,572.20x = 113,408,397,657.42
  5. Step 5: Solve for x
    x = 113,408,397,657.42/286,572.20
  6. Step 6: Final answer
    x = 395,741.10

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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.