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Finding the Fourth Proportional to 282,653.70, 423,980.55 and 220,445.70

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Solution

The fourth proportional to 282,653.70, 423,980.55 and 220,445.70 is: 330,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,653.70 : 423,980.55 = 220,445.70 : x
  2. Step 2: Convert to fraction form
    282,653.70/423,980.55 = 220,445.70/x
  3. Step 3: Cross multiply
    282,653.70x = 423,980.55 × 220,445.70
  4. Step 4: Simplify right side
    282,653.70x = 93,464,689,131.14
  5. Step 5: Solve for x
    x = 93,464,689,131.14/282,653.70
  6. Step 6: Final answer
    x = 330,668.55

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Similar ratio
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1.5x scale

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.