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Finding the Fourth Proportional to 310,781.58, 428,874.23 and 174,815.53

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Solution

The fourth proportional to 310,781.58, 428,874.23 and 174,815.53 is: 241,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,781.58 : 428,874.23 = 174,815.53 : x
  2. Step 2: Convert to fraction form
    310,781.58/428,874.23 = 174,815.53/x
  3. Step 3: Cross multiply
    310,781.58x = 428,874.23 × 174,815.53
  4. Step 4: Simplify right side
    310,781.58x = 74,973,875,820.79
  5. Step 5: Solve for x
    x = 74,973,875,820.79/310,781.58
  6. Step 6: Final answer
    x = 241,242.98

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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.