Home / 338,985.12-508,481.28-102,329.76

Finding the Fourth Proportional to 338,985.12, 508,481.28 and 102,329.76

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Solution

The fourth proportional to 338,985.12, 508,481.28 and 102,329.76 is: 153,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,985.12 : 508,481.28 = 102,329.76 : x
  2. Step 2: Convert to fraction form
    338,985.12/508,481.28 = 102,329.76/x
  3. Step 3: Cross multiply
    338,985.12x = 508,481.28 × 102,329.76
  4. Step 4: Simplify right side
    338,985.12x = 52,032,767,346.89
  5. Step 5: Solve for x
    x = 52,032,767,346.89/338,985.12
  6. Step 6: Final answer
    x = 153,495.73

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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.