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Finding the Fourth Proportional to 274,275.16, 378,534.73 and 153,423.16

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Solution

The fourth proportional to 274,275.16, 378,534.73 and 153,423.16 is: 211,743.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,275.16 : 378,534.73 = 153,423.16 : x
  2. Step 2: Convert to fraction form
    274,275.16/378,534.73 = 153,423.16/x
  3. Step 3: Cross multiply
    274,275.16x = 378,534.73 × 153,423.16
  4. Step 4: Simplify right side
    274,275.16x = 58,075,992,553.67
  5. Step 5: Solve for x
    x = 58,075,992,553.67/274,275.16
  6. Step 6: Final answer
    x = 211,743.54

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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.