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Finding the Fourth Proportional to 398,881.85, 598,322.30 and 118,399.10

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Solution

The fourth proportional to 398,881.85, 598,322.30 and 118,399.10 is: 177,598.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,881.85 : 598,322.30 = 118,399.10 : x
  2. Step 2: Convert to fraction form
    398,881.85/598,322.30 = 118,399.10/x
  3. Step 3: Cross multiply
    398,881.85x = 598,322.30 × 118,399.10
  4. Step 4: Simplify right side
    398,881.85x = 70,840,818,246.32
  5. Step 5: Solve for x
    x = 70,840,818,246.32/398,881.85
  6. Step 6: Final answer
    x = 177,598.50

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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.