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Finding the Fourth Proportional to 538,652.63, 807,978.95 and 139,333.77

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Solution

The fourth proportional to 538,652.63, 807,978.95 and 139,333.77 is: 209,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,652.63 : 807,978.95 = 139,333.77 : x
  2. Step 2: Convert to fraction form
    538,652.63/807,978.95 = 139,333.77/x
  3. Step 3: Cross multiply
    538,652.63x = 807,978.95 × 139,333.77
  4. Step 4: Simplify right side
    538,652.63x = 112,578,753,009.97
  5. Step 5: Solve for x
    x = 112,578,753,009.97/538,652.63
  6. Step 6: Final answer
    x = 209,000.66

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Similar ratio
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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.