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Finding the Fourth Proportional to 380,554.98, 570,866.19 and 100,072.23

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Solution

The fourth proportional to 380,554.98, 570,866.19 and 100,072.23 is: 150,117.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,554.98 : 570,866.19 = 100,072.23 : x
  2. Step 2: Convert to fraction form
    380,554.98/570,866.19 = 100,072.23/x
  3. Step 3: Cross multiply
    380,554.98x = 570,866.19 × 100,072.23
  4. Step 4: Simplify right side
    380,554.98x = 57,127,855,247.02
  5. Step 5: Solve for x
    x = 57,127,855,247.02/380,554.98
  6. Step 6: Final answer
    x = 150,117.22

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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.