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Finding the Fourth Proportional to 507,238.22, 699,980.10 and 280,878.86

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Solution

The fourth proportional to 507,238.22, 699,980.10 and 280,878.86 is: 387,608.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,238.22 : 699,980.10 = 280,878.86 : x
  2. Step 2: Convert to fraction form
    507,238.22/699,980.10 = 280,878.86/x
  3. Step 3: Cross multiply
    507,238.22x = 699,980.10 × 280,878.86
  4. Step 4: Simplify right side
    507,238.22x = 196,609,612,510.69
  5. Step 5: Solve for x
    x = 196,609,612,510.69/507,238.22
  6. Step 6: Final answer
    x = 387,608.04

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1.5x scale

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.