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Finding the Fourth Proportional to 245,349.41, 367,991.71 and 85,391.01

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Solution

The fourth proportional to 245,349.41, 367,991.71 and 85,391.01 is: 128,075.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,349.41 : 367,991.71 = 85,391.01 : x
  2. Step 2: Convert to fraction form
    245,349.41/367,991.71 = 85,391.01/x
  3. Step 3: Cross multiply
    245,349.41x = 367,991.71 × 85,391.01
  4. Step 4: Simplify right side
    245,349.41x = 31,423,183,575.05
  5. Step 5: Solve for x
    x = 31,423,183,575.05/245,349.41
  6. Step 6: Final answer
    x = 128,075.24

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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.