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Finding the Fourth Proportional to 279,445.96, 385,619.70 and 152,113.96

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Solution

The fourth proportional to 279,445.96, 385,619.70 and 152,113.96 is: 209,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,445.96 : 385,619.70 = 152,113.96 : x
  2. Step 2: Convert to fraction form
    279,445.96/385,619.70 = 152,113.96/x
  3. Step 3: Cross multiply
    279,445.96x = 385,619.70 × 152,113.96
  4. Step 4: Simplify right side
    279,445.96x = 58,658,139,621.01
  5. Step 5: Solve for x
    x = 58,658,139,621.01/279,445.96
  6. Step 6: Final answer
    x = 209,908.71

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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.