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Finding the Fourth Proportional to 354,615.40, 531,923.10 and 340,618.60

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Solution

The fourth proportional to 354,615.40, 531,923.10 and 340,618.60 is: 510,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,615.40 : 531,923.10 = 340,618.60 : x
  2. Step 2: Convert to fraction form
    354,615.40/531,923.10 = 340,618.60/x
  3. Step 3: Cross multiply
    354,615.40x = 531,923.10 × 340,618.60
  4. Step 4: Simplify right side
    354,615.40x = 181,182,901,629.66
  5. Step 5: Solve for x
    x = 181,182,901,629.66/354,615.40
  6. Step 6: Final answer
    x = 510,927.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.