Home / 313,689,998.70-432,889,804.42-172,558,180.16

Finding the Fourth Proportional to 313,689,998.70, 432,889,804.42 and 172,558,180.16

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Solution

The fourth proportional to 313,689,998.70, 432,889,804.42 and 172,558,180.16 is: 238,128,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,689,998.70 : 432,889,804.42 = 172,558,180.16 : x
  2. Step 2: Convert to fraction form
    313,689,998.70/432,889,804.42 = 172,558,180.16/x
  3. Step 3: Cross multiply
    313,689,998.70x = 432,889,804.42 × 172,558,180.16
  4. Step 4: Simplify right side
    313,689,998.70x = 74,698,676,860,533,520
  5. Step 5: Solve for x
    x = 74,698,676,860,533,520/313,689,998.70
  6. Step 6: Final answer
    x = 238,128,971.82

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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.