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Finding the Fourth Proportional to 286,847.20, 429,752.40 and 253,669.60

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Solution

The fourth proportional to 286,847.20, 429,752.40 and 253,669.60 is: 380,045.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,847.20 : 429,752.40 = 253,669.60 : x
  2. Step 2: Convert to fraction form
    286,847.20/429,752.40 = 253,669.60/x
  3. Step 3: Cross multiply
    286,847.20x = 429,752.40 × 253,669.60
  4. Step 4: Simplify right side
    286,847.20x = 109,015,119,407.04
  5. Step 5: Solve for x
    x = 109,015,119,407.04/286,847.20
  6. Step 6: Final answer
    x = 380,045.96

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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.