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Finding the Fourth Proportional to 272,870.74, 408,550.38 and 139,463.74

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Solution

The fourth proportional to 272,870.74, 408,550.38 and 139,463.74 is: 208,809.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,870.74 : 408,550.38 = 139,463.74 : x
  2. Step 2: Convert to fraction form
    272,870.74/408,550.38 = 139,463.74/x
  3. Step 3: Cross multiply
    272,870.74x = 408,550.38 × 139,463.74
  4. Step 4: Simplify right side
    272,870.74x = 56,977,963,973.22
  5. Step 5: Solve for x
    x = 56,977,963,973.22/272,870.74
  6. Step 6: Final answer
    x = 208,809.36

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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.