Home / 312,127.98-430,735.23-168,890.55

Finding the Fourth Proportional to 312,127.98, 430,735.23 and 168,890.55

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Solution

The fourth proportional to 312,127.98, 430,735.23 and 168,890.55 is: 233,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,127.98 : 430,735.23 = 168,890.55 : x
  2. Step 2: Convert to fraction form
    312,127.98/430,735.23 = 168,890.55/x
  3. Step 3: Cross multiply
    312,127.98x = 430,735.23 × 168,890.55
  4. Step 4: Simplify right side
    312,127.98x = 72,747,109,899.08
  5. Step 5: Solve for x
    x = 72,747,109,899.08/312,127.98
  6. Step 6: Final answer
    x = 233,068.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.