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Finding the Fourth Proportional to 245,631.69, 368,537.65 and 103,512.74

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Solution

The fourth proportional to 245,631.69, 368,537.65 and 103,512.74 is: 155,307.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,631.69 : 368,537.65 = 103,512.74 : x
  2. Step 2: Convert to fraction form
    245,631.69/368,537.65 = 103,512.74/x
  3. Step 3: Cross multiply
    245,631.69x = 368,537.65 × 103,512.74
  4. Step 4: Simplify right side
    245,631.69x = 38,148,339,843.19
  5. Step 5: Solve for x
    x = 38,148,339,843.19/245,631.69
  6. Step 6: Final answer
    x = 155,307.08

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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.