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Finding the Fourth Proportional to 338,267.28, 507,479.31 and 98,386.86

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Solution

The fourth proportional to 338,267.28, 507,479.31 and 98,386.86 is: 147,603.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,267.28 : 507,479.31 = 98,386.86 : x
  2. Step 2: Convert to fraction form
    338,267.28/507,479.31 = 98,386.86/x
  3. Step 3: Cross multiply
    338,267.28x = 507,479.31 × 98,386.86
  4. Step 4: Simplify right side
    338,267.28x = 49,929,295,825.87
  5. Step 5: Solve for x
    x = 49,929,295,825.87/338,267.28
  6. Step 6: Final answer
    x = 147,603.09

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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.