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Finding the Fourth Proportional to 279,085.30, 385,154.51 and 164,440.34

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Solution

The fourth proportional to 279,085.30, 385,154.51 and 164,440.34 is: 226,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,085.30 : 385,154.51 = 164,440.34 : x
  2. Step 2: Convert to fraction form
    279,085.30/385,154.51 = 164,440.34/x
  3. Step 3: Cross multiply
    279,085.30x = 385,154.51 × 164,440.34
  4. Step 4: Simplify right side
    279,085.30x = 63,334,938,576.93
  5. Step 5: Solve for x
    x = 63,334,938,576.93/279,085.30
  6. Step 6: Final answer
    x = 226,937.57

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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.