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Finding the Fourth Proportional to 190,878.40, 286,609.20 and 146,555.20

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Solution

The fourth proportional to 190,878.40, 286,609.20 and 146,555.20 is: 220,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,878.40 : 286,609.20 = 146,555.20 : x
  2. Step 2: Convert to fraction form
    190,878.40/286,609.20 = 146,555.20/x
  3. Step 3: Cross multiply
    190,878.40x = 286,609.20 × 146,555.20
  4. Step 4: Simplify right side
    190,878.40x = 42,004,068,627.84
  5. Step 5: Solve for x
    x = 42,004,068,627.84/190,878.40
  6. Step 6: Final answer
    x = 220,056.69

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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.