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Finding the Fourth Proportional to 279,666.16, 385,945.26 and 152,341.48

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Solution

The fourth proportional to 279,666.16, 385,945.26 and 152,341.48 is: 210,234.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,666.16 : 385,945.26 = 152,341.48 : x
  2. Step 2: Convert to fraction form
    279,666.16/385,945.26 = 152,341.48/x
  3. Step 3: Cross multiply
    279,666.16x = 385,945.26 × 152,341.48
  4. Step 4: Simplify right side
    279,666.16x = 58,795,472,107.38
  5. Step 5: Solve for x
    x = 58,795,472,107.38/279,666.16
  6. Step 6: Final answer
    x = 210,234.49

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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.