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Finding the Fourth Proportional to 318,826.60, 478,128.14 and 94,127.08

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Solution

The fourth proportional to 318,826.60, 478,128.14 and 94,127.08 is: 141,157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,826.60 : 478,128.14 = 94,127.08 : x
  2. Step 2: Convert to fraction form
    318,826.60/478,128.14 = 94,127.08/x
  3. Step 3: Cross multiply
    318,826.60x = 478,128.14 × 94,127.08
  4. Step 4: Simplify right side
    318,826.60x = 45,004,805,684.03
  5. Step 5: Solve for x
    x = 45,004,805,684.03/318,826.60
  6. Step 6: Final answer
    x = 141,157.63

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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.