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Finding the Fourth Proportional to 385,640.94, 531,666.27 and 270,765.66

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Solution

The fourth proportional to 385,640.94, 531,666.27 and 270,765.66 is: 373,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,640.94 : 531,666.27 = 270,765.66 : x
  2. Step 2: Convert to fraction form
    385,640.94/531,666.27 = 270,765.66/x
  3. Step 3: Cross multiply
    385,640.94x = 531,666.27 × 270,765.66
  4. Step 4: Simplify right side
    385,640.94x = 143,956,968,496.29
  5. Step 5: Solve for x
    x = 143,956,968,496.29/385,640.94
  6. Step 6: Final answer
    x = 373,292.75

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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.