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Finding the Fourth Proportional to 352,994.56, 487,773.12 and 257,334.40

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Solution

The fourth proportional to 352,994.56, 487,773.12 and 257,334.40 is: 355,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,994.56 : 487,773.12 = 257,334.40 : x
  2. Step 2: Convert to fraction form
    352,994.56/487,773.12 = 257,334.40/x
  3. Step 3: Cross multiply
    352,994.56x = 487,773.12 × 257,334.40
  4. Step 4: Simplify right side
    352,994.56x = 125,520,803,171.33
  5. Step 5: Solve for x
    x = 125,520,803,171.33/352,994.56
  6. Step 6: Final answer
    x = 355,588.49

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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.