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Finding the Fourth Proportional to 262,563.40, 393,845.10 and 157,328.20

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Solution

The fourth proportional to 262,563.40, 393,845.10 and 157,328.20 is: 235,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,563.40 : 393,845.10 = 157,328.20 : x
  2. Step 2: Convert to fraction form
    262,563.40/393,845.10 = 157,328.20/x
  3. Step 3: Cross multiply
    262,563.40x = 393,845.10 × 157,328.20
  4. Step 4: Simplify right side
    262,563.40x = 61,962,940,661.82
  5. Step 5: Solve for x
    x = 61,962,940,661.82/262,563.40
  6. Step 6: Final answer
    x = 235,992.30

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1.5x scale

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.