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Finding the Fourth Proportional to 557,661.40, 835,325.70 and 308,051.80

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Solution

The fourth proportional to 557,661.40, 835,325.70 and 308,051.80 is: 461,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,661.40 : 835,325.70 = 308,051.80 : x
  2. Step 2: Convert to fraction form
    557,661.40/835,325.70 = 308,051.80/x
  3. Step 3: Cross multiply
    557,661.40x = 835,325.70 × 308,051.80
  4. Step 4: Simplify right side
    557,661.40x = 257,323,585,471.26
  5. Step 5: Solve for x
    x = 257,323,585,471.26/557,661.40
  6. Step 6: Final answer
    x = 461,433.38

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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.