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Finding the Fourth Proportional to 440,635.50, 608,080.64 and 239,431.50

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Solution

The fourth proportional to 440,635.50, 608,080.64 and 239,431.50 is: 330,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,635.50 : 608,080.64 = 239,431.50 : x
  2. Step 2: Convert to fraction form
    440,635.50/608,080.64 = 239,431.50/x
  3. Step 3: Cross multiply
    440,635.50x = 608,080.64 × 239,431.50
  4. Step 4: Simplify right side
    440,635.50x = 145,593,658,559.00
  5. Step 5: Solve for x
    x = 145,593,658,559.00/440,635.50
  6. Step 6: Final answer
    x = 330,417.45

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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.