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Finding the Fourth Proportional to 310,674.15, 428,742.65 and 174,707.42

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Solution

The fourth proportional to 310,674.15, 428,742.65 and 174,707.42 is: 241,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,674.15 : 428,742.65 = 174,707.42 : x
  2. Step 2: Convert to fraction form
    310,674.15/428,742.65 = 174,707.42/x
  3. Step 3: Cross multiply
    310,674.15x = 428,742.65 × 174,707.42
  4. Step 4: Simplify right side
    310,674.15x = 74,904,520,518.52
  5. Step 5: Solve for x
    x = 74,904,520,518.52/310,674.15
  6. Step 6: Final answer
    x = 241,103.16

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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.