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Finding the Fourth Proportional to 380,405.16, 570,702.50 and 114,170.56

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Solution

The fourth proportional to 380,405.16, 570,702.50 and 114,170.56 is: 171,284.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,405.16 : 570,702.50 = 114,170.56 : x
  2. Step 2: Convert to fraction form
    380,405.16/570,702.50 = 114,170.56/x
  3. Step 3: Cross multiply
    380,405.16x = 570,702.50 × 114,170.56
  4. Step 4: Simplify right side
    380,405.16x = 65,157,424,018.40
  5. Step 5: Solve for x
    x = 65,157,424,018.40/380,405.16
  6. Step 6: Final answer
    x = 171,284.28

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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.