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Finding the Fourth Proportional to 203,513.93, 305,317.40 and 70,394.07

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Solution

The fourth proportional to 203,513.93, 305,317.40 and 70,394.07 is: 105,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,513.93 : 305,317.40 = 70,394.07 : x
  2. Step 2: Convert to fraction form
    203,513.93/305,317.40 = 70,394.07/x
  3. Step 3: Cross multiply
    203,513.93x = 305,317.40 × 70,394.07
  4. Step 4: Simplify right side
    203,513.93x = 21,492,534,427.82
  5. Step 5: Solve for x
    x = 21,492,534,427.82/203,513.93
  6. Step 6: Final answer
    x = 105,607.19

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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.