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Finding the Fourth Proportional to 310,326.81, 428,224.48 and 174,350.08

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Solution

The fourth proportional to 310,326.81, 428,224.48 and 174,350.08 is: 240,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,326.81 : 428,224.48 = 174,350.08 : x
  2. Step 2: Convert to fraction form
    310,326.81/428,224.48 = 174,350.08/x
  3. Step 3: Cross multiply
    310,326.81x = 428,224.48 × 174,350.08
  4. Step 4: Simplify right side
    310,326.81x = 74,660,972,345.96
  5. Step 5: Solve for x
    x = 74,660,972,345.96/310,326.81
  6. Step 6: Final answer
    x = 240,588.21

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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.