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Finding the Fourth Proportional to 380,866.88, 570,594 and 191,104.40

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Solution

The fourth proportional to 380,866.88, 570,594 and 191,104.40 is: 286,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,866.88 : 570,594 = 191,104.40 : x
  2. Step 2: Convert to fraction form
    380,866.88/570,594 = 191,104.40/x
  3. Step 3: Cross multiply
    380,866.88x = 570,594 × 191,104.40
  4. Step 4: Simplify right side
    380,866.88x = 109,043,024,013.60
  5. Step 5: Solve for x
    x = 109,043,024,013.60/380,866.88
  6. Step 6: Final answer
    x = 286,302.20

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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.