Home / 312,330.07-431,015.64-169,090.12

Finding the Fourth Proportional to 312,330.07, 431,015.64 and 169,090.12

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Solution

The fourth proportional to 312,330.07, 431,015.64 and 169,090.12 is: 233,344.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,330.07 : 431,015.64 = 169,090.12 : x
  2. Step 2: Convert to fraction form
    312,330.07/431,015.64 = 169,090.12/x
  3. Step 3: Cross multiply
    312,330.07x = 431,015.64 × 169,090.12
  4. Step 4: Simplify right side
    312,330.07x = 72,880,484,134.40
  5. Step 5: Solve for x
    x = 72,880,484,134.40/312,330.07
  6. Step 6: Final answer
    x = 233,344.44

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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.