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Finding the Fourth Proportional to 279,480.37, 385,670.67 and 152,155.93

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Solution

The fourth proportional to 279,480.37, 385,670.67 and 152,155.93 is: 209,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,480.37 : 385,670.67 = 152,155.93 : x
  2. Step 2: Convert to fraction form
    279,480.37/385,670.67 = 152,155.93/x
  3. Step 3: Cross multiply
    279,480.37x = 385,670.67 × 152,155.93
  4. Step 4: Simplify right side
    279,480.37x = 58,682,079,467.57
  5. Step 5: Solve for x
    x = 58,682,079,467.57/279,480.37
  6. Step 6: Final answer
    x = 209,968.52

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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.