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Finding the Fourth Proportional to 310,240.62, 428,133.78 and 174,280.32

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Solution

The fourth proportional to 310,240.62, 428,133.78 and 174,280.32 is: 240,507.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,240.62 : 428,133.78 = 174,280.32 : x
  2. Step 2: Convert to fraction form
    310,240.62/428,133.78 = 174,280.32/x
  3. Step 3: Cross multiply
    310,240.62x = 428,133.78 × 174,280.32
  4. Step 4: Simplify right side
    310,240.62x = 74,615,292,181.21
  5. Step 5: Solve for x
    x = 74,615,292,181.21/310,240.62
  6. Step 6: Final answer
    x = 240,507.81

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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.