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Finding the Fourth Proportional to 272,844,673.80, 409,270,509.90 and 91,091,851.80

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Solution

The fourth proportional to 272,844,673.80, 409,270,509.90 and 91,091,851.80 is: 136,638,945.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,844,673.80 : 409,270,509.90 = 91,091,851.80 : x
  2. Step 2: Convert to fraction form
    272,844,673.80/409,270,509.90 = 91,091,851.80/x
  3. Step 3: Cross multiply
    272,844,673.80x = 409,270,509.90 × 91,091,851.80
  4. Step 4: Simplify right side
    272,844,673.80x = 37,281,208,633,921,232
  5. Step 5: Solve for x
    x = 37,281,208,633,921,232/272,844,673.80
  6. Step 6: Final answer
    x = 136,638,945.94

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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.