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Finding the Fourth Proportional to 190,713.60, 286,070.40 and 50,486.40

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Solution

The fourth proportional to 190,713.60, 286,070.40 and 50,486.40 is: 75,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,713.60 : 286,070.40 = 50,486.40 : x
  2. Step 2: Convert to fraction form
    190,713.60/286,070.40 = 50,486.40/x
  3. Step 3: Cross multiply
    190,713.60x = 286,070.40 × 50,486.40
  4. Step 4: Simplify right side
    190,713.60x = 14,442,664,642.56
  5. Step 5: Solve for x
    x = 14,442,664,642.56/190,713.60
  6. Step 6: Final answer
    x = 75,729.60

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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.