Home / 398,540,526.15-550,095,317.51-231,330,657.18

Finding the Fourth Proportional to 398,540,526.15, 550,095,317.51 and 231,330,657.18

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Solution

The fourth proportional to 398,540,526.15, 550,095,317.51 and 231,330,657.18 is: 319,299,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,540,526.15 : 550,095,317.51 = 231,330,657.18 : x
  2. Step 2: Convert to fraction form
    398,540,526.15/550,095,317.51 = 231,330,657.18/x
  3. Step 3: Cross multiply
    398,540,526.15x = 550,095,317.51 × 231,330,657.18
  4. Step 4: Simplify right side
    398,540,526.15x = 127,253,911,310,072,416
  5. Step 5: Solve for x
    x = 127,253,911,310,072,416/398,540,526.15
  6. Step 6: Final answer
    x = 319,299,802.56

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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.