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Finding the Fourth Proportional to 478,863.50, 660,831.48 and 274,927.64

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Solution

The fourth proportional to 478,863.50, 660,831.48 and 274,927.64 is: 379,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,863.50 : 660,831.48 = 274,927.64 : x
  2. Step 2: Convert to fraction form
    478,863.50/660,831.48 = 274,927.64/x
  3. Step 3: Cross multiply
    478,863.50x = 660,831.48 × 274,927.64
  4. Step 4: Simplify right side
    478,863.50x = 181,680,835,929.95
  5. Step 5: Solve for x
    x = 181,680,835,929.95/478,863.50
  6. Step 6: Final answer
    x = 379,400.05

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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.