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Finding the Fourth Proportional to 507,580.80, 761,025.60 and 191,990.40

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Solution

The fourth proportional to 507,580.80, 761,025.60 and 191,990.40 is: 287,854.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,580.80 : 761,025.60 = 191,990.40 : x
  2. Step 2: Convert to fraction form
    507,580.80/761,025.60 = 191,990.40/x
  3. Step 3: Cross multiply
    507,580.80x = 761,025.60 × 191,990.40
  4. Step 4: Simplify right side
    507,580.80x = 146,109,609,354.24
  5. Step 5: Solve for x
    x = 146,109,609,354.24/507,580.80
  6. Step 6: Final answer
    x = 287,854.88

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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.