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Finding the Fourth Proportional to 274,615.04, 378,948.48 and 153,728.48

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Solution

The fourth proportional to 274,615.04, 378,948.48 and 153,728.48 is: 212,133.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,615.04 : 378,948.48 = 153,728.48 : x
  2. Step 2: Convert to fraction form
    274,615.04/378,948.48 = 153,728.48/x
  3. Step 3: Cross multiply
    274,615.04x = 378,948.48 × 153,728.48
  4. Step 4: Simplify right side
    274,615.04x = 58,255,173,828.71
  5. Step 5: Solve for x
    x = 58,255,173,828.71/274,615.04
  6. Step 6: Final answer
    x = 212,133.95

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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.