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Finding the Fourth Proportional to 351,485.61, 485,050.40 and 190,340.83

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Solution

The fourth proportional to 351,485.61, 485,050.40 and 190,340.83 is: 262,670.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,485.61 : 485,050.40 = 190,340.83 : x
  2. Step 2: Convert to fraction form
    351,485.61/485,050.40 = 190,340.83/x
  3. Step 3: Cross multiply
    351,485.61x = 485,050.40 × 190,340.83
  4. Step 4: Simplify right side
    351,485.61x = 92,324,894,776.13
  5. Step 5: Solve for x
    x = 92,324,894,776.13/351,485.61
  6. Step 6: Final answer
    x = 262,670.49

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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.