Home / 261,210,698.49-391,872,735.08-79,453,152.57

Finding the Fourth Proportional to 261,210,698.49, 391,872,735.08 and 79,453,152.57

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Solution

The fourth proportional to 261,210,698.49, 391,872,735.08 and 79,453,152.57 is: 119,196,971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,698.49 : 391,872,735.08 = 79,453,152.57 : x
  2. Step 2: Convert to fraction form
    261,210,698.49/391,872,735.08 = 79,453,152.57/x
  3. Step 3: Cross multiply
    261,210,698.49x = 391,872,735.08 × 79,453,152.57
  4. Step 4: Simplify right side
    261,210,698.49x = 31,135,524,207,937,160
  5. Step 5: Solve for x
    x = 31,135,524,207,937,160/261,210,698.49
  6. Step 6: Final answer
    x = 119,196,971.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.