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Finding the Fourth Proportional to 279,465.68, 385,650.54 and 152,141.72

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Solution

The fourth proportional to 279,465.68, 385,650.54 and 152,141.72 is: 209,948.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,465.68 : 385,650.54 = 152,141.72 : x
  2. Step 2: Convert to fraction form
    279,465.68/385,650.54 = 152,141.72/x
  3. Step 3: Cross multiply
    279,465.68x = 385,650.54 × 152,141.72
  4. Step 4: Simplify right side
    279,465.68x = 58,673,536,474.53
  5. Step 5: Solve for x
    x = 58,673,536,474.53/279,465.68
  6. Step 6: Final answer
    x = 209,948.99

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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.