Home / 309,877.20-464,815.80-265,590.45

Finding the Fourth Proportional to 309,877.20, 464,815.80 and 265,590.45

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Solution

The fourth proportional to 309,877.20, 464,815.80 and 265,590.45 is: 398,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,877.20 : 464,815.80 = 265,590.45 : x
  2. Step 2: Convert to fraction form
    309,877.20/464,815.80 = 265,590.45/x
  3. Step 3: Cross multiply
    309,877.20x = 464,815.80 × 265,590.45
  4. Step 4: Simplify right side
    309,877.20x = 123,450,637,489.11
  5. Step 5: Solve for x
    x = 123,450,637,489.11/309,877.20
  6. Step 6: Final answer
    x = 398,385.68

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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.