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Finding the Fourth Proportional to 272,573.36, 408,943.79 and 139,547.00

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Solution

The fourth proportional to 272,573.36, 408,943.79 and 139,547.00 is: 209,363.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,573.36 : 408,943.79 = 139,547.00 : x
  2. Step 2: Convert to fraction form
    272,573.36/408,943.79 = 139,547.00/x
  3. Step 3: Cross multiply
    272,573.36x = 408,943.79 × 139,547.00
  4. Step 4: Simplify right side
    272,573.36x = 57,066,876,320.68
  5. Step 5: Solve for x
    x = 57,066,876,320.68/272,573.36
  6. Step 6: Final answer
    x = 209,363.37

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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.