Home / 320,127.04-440,500.44-310,387.60

Finding the Fourth Proportional to 320,127.04, 440,500.44 and 310,387.60

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Solution

The fourth proportional to 320,127.04, 440,500.44 and 310,387.60 is: 427,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,127.04 : 440,500.44 = 310,387.60 : x
  2. Step 2: Convert to fraction form
    320,127.04/440,500.44 = 310,387.60/x
  3. Step 3: Cross multiply
    320,127.04x = 440,500.44 × 310,387.60
  4. Step 4: Simplify right side
    320,127.04x = 136,725,874,370.54
  5. Step 5: Solve for x
    x = 136,725,874,370.54/320,127.04
  6. Step 6: Final answer
    x = 427,098.80

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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.