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Finding the Fourth Proportional to 245,317.10, 367,866.30 and 112,128.80

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Solution

The fourth proportional to 245,317.10, 367,866.30 and 112,128.80 is: 168,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,317.10 : 367,866.30 = 112,128.80 : x
  2. Step 2: Convert to fraction form
    245,317.10/367,866.30 = 112,128.80/x
  3. Step 3: Cross multiply
    245,317.10x = 367,866.30 × 112,128.80
  4. Step 4: Simplify right side
    245,317.10x = 41,248,406,779.44
  5. Step 5: Solve for x
    x = 41,248,406,779.44/245,317.10
  6. Step 6: Final answer
    x = 168,143.22

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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.