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Finding the Fourth Proportional to 272,254.40, 408,053.55 and 139,066.10

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Solution

The fourth proportional to 272,254.40, 408,053.55 and 139,066.10 is: 208,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,254.40 : 408,053.55 = 139,066.10 : x
  2. Step 2: Convert to fraction form
    272,254.40/408,053.55 = 139,066.10/x
  3. Step 3: Cross multiply
    272,254.40x = 408,053.55 × 139,066.10
  4. Step 4: Simplify right side
    272,254.40x = 56,746,415,789.66
  5. Step 5: Solve for x
    x = 56,746,415,789.66/272,254.40
  6. Step 6: Final answer
    x = 208,431.58

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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.