Home / 291,403.30-436,994.24-139,444.40

Finding the Fourth Proportional to 291,403.30, 436,994.24 and 139,444.40

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Solution

The fourth proportional to 291,403.30, 436,994.24 and 139,444.40 is: 209,113.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,403.30 : 436,994.24 = 139,444.40 : x
  2. Step 2: Convert to fraction form
    291,403.30/436,994.24 = 139,444.40/x
  3. Step 3: Cross multiply
    291,403.30x = 436,994.24 × 139,444.40
  4. Step 4: Simplify right side
    291,403.30x = 60,936,399,600.26
  5. Step 5: Solve for x
    x = 60,936,399,600.26/291,403.30
  6. Step 6: Final answer
    x = 209,113.62

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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.