Home / 320,126.04-440,499.06-310,386.60

Finding the Fourth Proportional to 320,126.04, 440,499.06 and 310,386.60

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Solution

The fourth proportional to 320,126.04, 440,499.06 and 310,386.60 is: 427,097.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,126.04 : 440,499.06 = 310,386.60 : x
  2. Step 2: Convert to fraction form
    320,126.04/440,499.06 = 310,386.60/x
  3. Step 3: Cross multiply
    320,126.04x = 440,499.06 × 310,386.60
  4. Step 4: Simplify right side
    320,126.04x = 136,725,005,536.60
  5. Step 5: Solve for x
    x = 136,725,005,536.60/320,126.04
  6. Step 6: Final answer
    x = 427,097.42

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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.