Home / 209,219,803-288,725,984.34-115,144,781.56

Finding the Fourth Proportional to 209,219,803, 288,725,984.34 and 115,144,781.56

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Solution

The fourth proportional to 209,219,803, 288,725,984.34 and 115,144,781.56 is: 158,901,260.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,219,803 : 288,725,984.34 = 115,144,781.56 : x
  2. Step 2: Convert to fraction form
    209,219,803/288,725,984.34 = 115,144,781.56/x
  3. Step 3: Cross multiply
    209,219,803x = 288,725,984.34 × 115,144,781.56
  4. Step 4: Simplify right side
    209,219,803x = 33,245,290,397,525,280
  5. Step 5: Solve for x
    x = 33,245,290,397,525,280/209,219,803
  6. Step 6: Final answer
    x = 158,901,260.40

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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.