Home / 285,973.46-428,963.23-86,295.60

Finding the Fourth Proportional to 285,973.46, 428,963.23 and 86,295.60

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Solution

The fourth proportional to 285,973.46, 428,963.23 and 86,295.60 is: 129,444.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,973.46 : 428,963.23 = 86,295.60 : x
  2. Step 2: Convert to fraction form
    285,973.46/428,963.23 = 86,295.60/x
  3. Step 3: Cross multiply
    285,973.46x = 428,963.23 × 86,295.60
  4. Step 4: Simplify right side
    285,973.46x = 37,017,639,631.25
  5. Step 5: Solve for x
    x = 37,017,639,631.25/285,973.46
  6. Step 6: Final answer
    x = 129,444.32

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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.