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Finding the Fourth Proportional to 351,715.64, 485,365.90 and 190,570.66

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Solution

The fourth proportional to 351,715.64, 485,365.90 and 190,570.66 is: 262,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,715.64 : 485,365.90 = 190,570.66 : x
  2. Step 2: Convert to fraction form
    351,715.64/485,365.90 = 190,570.66/x
  3. Step 3: Cross multiply
    351,715.64x = 485,365.90 × 190,570.66
  4. Step 4: Simplify right side
    351,715.64x = 92,496,499,904.49
  5. Step 5: Solve for x
    x = 92,496,499,904.49/351,715.64
  6. Step 6: Final answer
    x = 262,986.60

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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.