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Finding the Fourth Proportional to 310,357.32, 428,261.32 and 174,369.64

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Solution

The fourth proportional to 310,357.32, 428,261.32 and 174,369.64 is: 240,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,357.32 : 428,261.32 = 174,369.64 : x
  2. Step 2: Convert to fraction form
    310,357.32/428,261.32 = 174,369.64/x
  3. Step 3: Cross multiply
    310,357.32x = 428,261.32 × 174,369.64
  4. Step 4: Simplify right side
    310,357.32x = 74,675,772,194.32
  5. Step 5: Solve for x
    x = 74,675,772,194.32/310,357.32
  6. Step 6: Final answer
    x = 240,612.25

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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.