Home / 286,795.20-430,205.60-109,387.20

Finding the Fourth Proportional to 286,795.20, 430,205.60 and 109,387.20

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Solution

The fourth proportional to 286,795.20, 430,205.60 and 109,387.20 is: 164,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,795.20 : 430,205.60 = 109,387.20 : x
  2. Step 2: Convert to fraction form
    286,795.20/430,205.60 = 109,387.20/x
  3. Step 3: Cross multiply
    286,795.20x = 430,205.60 × 109,387.20
  4. Step 4: Simplify right side
    286,795.20x = 47,058,986,008.32
  5. Step 5: Solve for x
    x = 47,058,986,008.32/286,795.20
  6. Step 6: Final answer
    x = 164,085.68

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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.