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Finding the Fourth Proportional to 245,412.56, 368,050.79 and 155,396.72

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Solution

The fourth proportional to 245,412.56, 368,050.79 and 155,396.72 is: 233,051.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,412.56 : 368,050.79 = 155,396.72 : x
  2. Step 2: Convert to fraction form
    245,412.56/368,050.79 = 155,396.72/x
  3. Step 3: Cross multiply
    245,412.56x = 368,050.79 × 155,396.72
  4. Step 4: Simplify right side
    245,412.56x = 57,193,882,942.17
  5. Step 5: Solve for x
    x = 57,193,882,942.17/245,412.56
  6. Step 6: Final answer
    x = 233,051.98

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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.