Home / 289,747.10-434,620.65-278,083.10

Finding the Fourth Proportional to 289,747.10, 434,620.65 and 278,083.10

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Solution

The fourth proportional to 289,747.10, 434,620.65 and 278,083.10 is: 417,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,747.10 : 434,620.65 = 278,083.10 : x
  2. Step 2: Convert to fraction form
    289,747.10/434,620.65 = 278,083.10/x
  3. Step 3: Cross multiply
    289,747.10x = 434,620.65 × 278,083.10
  4. Step 4: Simplify right side
    289,747.10x = 120,860,657,676.02
  5. Step 5: Solve for x
    x = 120,860,657,676.02/289,747.10
  6. Step 6: Final answer
    x = 417,124.65

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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.