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Finding the Fourth Proportional to 279,670.61, 385,943.45 and 152,346.20

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Solution

The fourth proportional to 279,670.61, 385,943.45 and 152,346.20 is: 210,236.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,670.61 : 385,943.45 = 152,346.20 : x
  2. Step 2: Convert to fraction form
    279,670.61/385,943.45 = 152,346.20/x
  3. Step 3: Cross multiply
    279,670.61x = 385,943.45 × 152,346.20
  4. Step 4: Simplify right side
    279,670.61x = 58,797,015,330.94
  5. Step 5: Solve for x
    x = 58,797,015,330.94/279,670.61
  6. Step 6: Final answer
    x = 210,236.67

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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.