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Finding the Fourth Proportional to 315,989.64, 436,015.31 and 180,026.28

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Solution

The fourth proportional to 315,989.64, 436,015.31 and 180,026.28 is: 248,407.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,989.64 : 436,015.31 = 180,026.28 : x
  2. Step 2: Convert to fraction form
    315,989.64/436,015.31 = 180,026.28/x
  3. Step 3: Cross multiply
    315,989.64x = 436,015.31 × 180,026.28
  4. Step 4: Simplify right side
    315,989.64x = 78,494,213,382.22
  5. Step 5: Solve for x
    x = 78,494,213,382.22/315,989.64
  6. Step 6: Final answer
    x = 248,407.55

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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.