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Finding the Fourth Proportional to 380,583.19, 570,954.95 and 143,920.63

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Solution

The fourth proportional to 380,583.19, 570,954.95 and 143,920.63 is: 215,911.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,583.19 : 570,954.95 = 143,920.63 : x
  2. Step 2: Convert to fraction form
    380,583.19/570,954.95 = 143,920.63/x
  3. Step 3: Cross multiply
    380,583.19x = 570,954.95 × 143,920.63
  4. Step 4: Simplify right side
    380,583.19x = 82,172,195,386.02
  5. Step 5: Solve for x
    x = 82,172,195,386.02/380,583.19
  6. Step 6: Final answer
    x = 215,911.26

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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.