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Finding the Fourth Proportional to 287,234.60, 430,851.90 and 262,351.40

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Solution

The fourth proportional to 287,234.60, 430,851.90 and 262,351.40 is: 393,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,234.60 : 430,851.90 = 262,351.40 : x
  2. Step 2: Convert to fraction form
    287,234.60/430,851.90 = 262,351.40/x
  3. Step 3: Cross multiply
    287,234.60x = 430,851.90 × 262,351.40
  4. Step 4: Simplify right side
    287,234.60x = 113,034,599,157.66
  5. Step 5: Solve for x
    x = 113,034,599,157.66/287,234.60
  6. Step 6: Final answer
    x = 393,527.10

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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.