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Finding the Fourth Proportional to 310,409.33, 428,373.47 and 174,455.69

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Solution

The fourth proportional to 310,409.33, 428,373.47 and 174,455.69 is: 240,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,409.33 : 428,373.47 = 174,455.69 : x
  2. Step 2: Convert to fraction form
    310,409.33/428,373.47 = 174,455.69/x
  3. Step 3: Cross multiply
    310,409.33x = 428,373.47 × 174,455.69
  4. Step 4: Simplify right side
    310,409.33x = 74,732,189,286.54
  5. Step 5: Solve for x
    x = 74,732,189,286.54/310,409.33
  6. Step 6: Final answer
    x = 240,753.68

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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.