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Finding the Fourth Proportional to 310,153.73, 428,012.23 and 174,187.87

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Solution

The fourth proportional to 310,153.73, 428,012.23 and 174,187.87 is: 240,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,153.73 : 428,012.23 = 174,187.87 : x
  2. Step 2: Convert to fraction form
    310,153.73/428,012.23 = 174,187.87/x
  3. Step 3: Cross multiply
    310,153.73x = 428,012.23 × 174,187.87
  4. Step 4: Simplify right side
    310,153.73x = 74,554,537,008.85
  5. Step 5: Solve for x
    x = 74,554,537,008.85/310,153.73
  6. Step 6: Final answer
    x = 240,379.30

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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.