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Finding the Fourth Proportional to 279,603.63, 385,857.38 and 152,279.12

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Solution

The fourth proportional to 279,603.63, 385,857.38 and 152,279.12 is: 210,147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,603.63 : 385,857.38 = 152,279.12 : x
  2. Step 2: Convert to fraction form
    279,603.63/385,857.38 = 152,279.12/x
  3. Step 3: Cross multiply
    279,603.63x = 385,857.38 × 152,279.12
  4. Step 4: Simplify right side
    279,603.63x = 58,758,023,617.25
  5. Step 5: Solve for x
    x = 58,758,023,617.25/279,603.63
  6. Step 6: Final answer
    x = 210,147.57

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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.