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Finding the Fourth Proportional to 352,631, 528,945.42 and 127,991.18

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Solution

The fourth proportional to 352,631, 528,945.42 and 127,991.18 is: 191,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,631 : 528,945.42 = 127,991.18 : x
  2. Step 2: Convert to fraction form
    352,631/528,945.42 = 127,991.18/x
  3. Step 3: Cross multiply
    352,631x = 528,945.42 × 127,991.18
  4. Step 4: Simplify right side
    352,631x = 67,700,348,461.40
  5. Step 5: Solve for x
    x = 67,700,348,461.40/352,631
  6. Step 6: Final answer
    x = 191,986.38

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1.5x scale

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.