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Finding the Fourth Proportional to 279,014.49, 385,225.43 and 214,368.57

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Solution

The fourth proportional to 279,014.49, 385,225.43 and 214,368.57 is: 295,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,014.49 : 385,225.43 = 214,368.57 : x
  2. Step 2: Convert to fraction form
    279,014.49/385,225.43 = 214,368.57/x
  3. Step 3: Cross multiply
    279,014.49x = 385,225.43 × 214,368.57
  4. Step 4: Simplify right side
    279,014.49x = 82,580,223,484.89
  5. Step 5: Solve for x
    x = 82,580,223,484.89/279,014.49
  6. Step 6: Final answer
    x = 295,971.09

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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.