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Finding the Fourth Proportional to 286,035.88, 394,729.60 and 158,712.40

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Solution

The fourth proportional to 286,035.88, 394,729.60 and 158,712.40 is: 219,023.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,035.88 : 394,729.60 = 158,712.40 : x
  2. Step 2: Convert to fraction form
    286,035.88/394,729.60 = 158,712.40/x
  3. Step 3: Cross multiply
    286,035.88x = 394,729.60 × 158,712.40
  4. Step 4: Simplify right side
    286,035.88x = 62,648,482,167.04
  5. Step 5: Solve for x
    x = 62,648,482,167.04/286,035.88
  6. Step 6: Final answer
    x = 219,023.16

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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.