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Finding the Fourth Proportional to 274,718.16, 379,119.48 and 153,859.20

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Solution

The fourth proportional to 274,718.16, 379,119.48 and 153,859.20 is: 212,330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,718.16 : 379,119.48 = 153,859.20 : x
  2. Step 2: Convert to fraction form
    274,718.16/379,119.48 = 153,859.20/x
  3. Step 3: Cross multiply
    274,718.16x = 379,119.48 × 153,859.20
  4. Step 4: Simplify right side
    274,718.16x = 58,331,019,897.22
  5. Step 5: Solve for x
    x = 58,331,019,897.22/274,718.16
  6. Step 6: Final answer
    x = 212,330.41

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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.