Home / 312,820,791.57-431,702,602.02-180,659,386.53

Finding the Fourth Proportional to 312,820,791.57, 431,702,602.02 and 180,659,386.53

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Solution

The fourth proportional to 312,820,791.57, 431,702,602.02 and 180,659,386.53 is: 249,315,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,820,791.57 : 431,702,602.02 = 180,659,386.53 : x
  2. Step 2: Convert to fraction form
    312,820,791.57/431,702,602.02 = 180,659,386.53/x
  3. Step 3: Cross multiply
    312,820,791.57x = 431,702,602.02 × 180,659,386.53
  4. Step 4: Simplify right side
    312,820,791.57x = 77,991,127,244,337,936
  5. Step 5: Solve for x
    x = 77,991,127,244,337,936/312,820,791.57
  6. Step 6: Final answer
    x = 249,315,676.41

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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.