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Finding the Fourth Proportional to 538,612.68, 807,942.72 and 159,518.10

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Solution

The fourth proportional to 538,612.68, 807,942.72 and 159,518.10 is: 239,284.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,612.68 : 807,942.72 = 159,518.10 : x
  2. Step 2: Convert to fraction form
    538,612.68/807,942.72 = 159,518.10/x
  3. Step 3: Cross multiply
    538,612.68x = 807,942.72 × 159,518.10
  4. Step 4: Simplify right side
    538,612.68x = 128,881,487,603.23
  5. Step 5: Solve for x
    x = 128,881,487,603.23/538,612.68
  6. Step 6: Final answer
    x = 239,284.17

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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.