Home / 312,820,792.70-431,702,603.57-180,659,387.66

Finding the Fourth Proportional to 312,820,792.70, 431,702,603.57 and 180,659,387.66

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Solution

The fourth proportional to 312,820,792.70, 431,702,603.57 and 180,659,387.66 is: 249,315,677.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,820,792.70 : 431,702,603.57 = 180,659,387.66 : x
  2. Step 2: Convert to fraction form
    312,820,792.70/431,702,603.57 = 180,659,387.66/x
  3. Step 3: Cross multiply
    312,820,792.70x = 431,702,603.57 × 180,659,387.66
  4. Step 4: Simplify right side
    312,820,792.70x = 77,991,128,010,477,072
  5. Step 5: Solve for x
    x = 77,991,128,010,477,072/312,820,792.70
  6. Step 6: Final answer
    x = 249,315,677.96

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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.