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Finding the Fourth Proportional to 398,751.93, 598,127.90 and 118,266.75

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Solution

The fourth proportional to 398,751.93, 598,127.90 and 118,266.75 is: 177,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,751.93 : 598,127.90 = 118,266.75 : x
  2. Step 2: Convert to fraction form
    398,751.93/598,127.90 = 118,266.75/x
  3. Step 3: Cross multiply
    398,751.93x = 598,127.90 × 118,266.75
  4. Step 4: Simplify right side
    398,751.93x = 70,738,642,225.99
  5. Step 5: Solve for x
    x = 70,738,642,225.99/398,751.93
  6. Step 6: Final answer
    x = 177,400.13

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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.