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Finding the Fourth Proportional to 371,571.96, 512,775.18 and 210,422.64

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Solution

The fourth proportional to 371,571.96, 512,775.18 and 210,422.64 is: 290,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,571.96 : 512,775.18 = 210,422.64 : x
  2. Step 2: Convert to fraction form
    371,571.96/512,775.18 = 210,422.64/x
  3. Step 3: Cross multiply
    371,571.96x = 512,775.18 × 210,422.64
  4. Step 4: Simplify right side
    371,571.96x = 107,899,507,102.08
  5. Step 5: Solve for x
    x = 107,899,507,102.08/371,571.96
  6. Step 6: Final answer
    x = 290,386.57

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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.