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Finding the Fourth Proportional to 245,918.34, 368,678.58 and 103,671.67

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Solution

The fourth proportional to 245,918.34, 368,678.58 and 103,671.67 is: 155,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,918.34 : 368,678.58 = 103,671.67 : x
  2. Step 2: Convert to fraction form
    245,918.34/368,678.58 = 103,671.67/x
  3. Step 3: Cross multiply
    245,918.34x = 368,678.58 × 103,671.67
  4. Step 4: Simplify right side
    245,918.34x = 38,221,524,081.83
  5. Step 5: Solve for x
    x = 38,221,524,081.83/245,918.34
  6. Step 6: Final answer
    x = 155,423.64

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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.