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Finding the Fourth Proportional to 309,328.80, 463,995.94 and 122,340.32

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Solution

The fourth proportional to 309,328.80, 463,995.94 and 122,340.32 is: 183,511.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,328.80 : 463,995.94 = 122,340.32 : x
  2. Step 2: Convert to fraction form
    309,328.80/463,995.94 = 122,340.32/x
  3. Step 3: Cross multiply
    309,328.80x = 463,995.94 × 122,340.32
  4. Step 4: Simplify right side
    309,328.80x = 56,765,411,778.30
  5. Step 5: Solve for x
    x = 56,765,411,778.30/309,328.80
  6. Step 6: Final answer
    x = 183,511.56

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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.