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Finding the Fourth Proportional to 245,933.17, 339,386.94 and 138,503.18

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Solution

The fourth proportional to 245,933.17, 339,386.94 and 138,503.18 is: 191,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,933.17 : 339,386.94 = 138,503.18 : x
  2. Step 2: Convert to fraction form
    245,933.17/339,386.94 = 138,503.18/x
  3. Step 3: Cross multiply
    245,933.17x = 339,386.94 × 138,503.18
  4. Step 4: Simplify right side
    245,933.17x = 47,006,168,051.02
  5. Step 5: Solve for x
    x = 47,006,168,051.02/245,933.17
  6. Step 6: Final answer
    x = 191,133.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.