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Finding the Fourth Proportional to 507,490.50, 700,336.95 and 281,150.58

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Solution

The fourth proportional to 507,490.50, 700,336.95 and 281,150.58 is: 387,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,490.50 : 700,336.95 = 281,150.58 : x
  2. Step 2: Convert to fraction form
    507,490.50/700,336.95 = 281,150.58/x
  3. Step 3: Cross multiply
    507,490.50x = 700,336.95 × 281,150.58
  4. Step 4: Simplify right side
    507,490.50x = 196,900,139,687.93
  5. Step 5: Solve for x
    x = 196,900,139,687.93/507,490.50
  6. Step 6: Final answer
    x = 387,987.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.