Home / 398,540,492.32-550,095,270.86-231,330,623.30

Finding the Fourth Proportional to 398,540,492.32, 550,095,270.86 and 231,330,623.30

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Solution

The fourth proportional to 398,540,492.32, 550,095,270.86 and 231,330,623.30 is: 319,299,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,540,492.32 : 550,095,270.86 = 231,330,623.30 : x
  2. Step 2: Convert to fraction form
    398,540,492.32/550,095,270.86 = 231,330,623.30/x
  3. Step 3: Cross multiply
    398,540,492.32x = 550,095,270.86 × 231,330,623.30
  4. Step 4: Simplify right side
    398,540,492.32x = 127,253,881,880,253,952
  5. Step 5: Solve for x
    x = 127,253,881,880,253,952/398,540,492.32
  6. Step 6: Final answer
    x = 319,299,755.82

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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.