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Finding the Fourth Proportional to 318,825.60, 478,014.72 and 141,236.16

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Solution

The fourth proportional to 318,825.60, 478,014.72 and 141,236.16 is: 211,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,825.60 : 478,014.72 = 141,236.16 : x
  2. Step 2: Convert to fraction form
    318,825.60/478,014.72 = 141,236.16/x
  3. Step 3: Cross multiply
    318,825.60x = 478,014.72 × 141,236.16
  4. Step 4: Simplify right side
    318,825.60x = 67,512,963,476.28
  5. Step 5: Solve for x
    x = 67,512,963,476.28/318,825.60
  6. Step 6: Final answer
    x = 211,755.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.