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Finding the Fourth Proportional to 190,886.40, 286,621.20 and 146,563.20

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Solution

The fourth proportional to 190,886.40, 286,621.20 and 146,563.20 is: 220,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,886.40 : 286,621.20 = 146,563.20 : x
  2. Step 2: Convert to fraction form
    190,886.40/286,621.20 = 146,563.20/x
  3. Step 3: Cross multiply
    190,886.40x = 286,621.20 × 146,563.20
  4. Step 4: Simplify right side
    190,886.40x = 42,008,120,259.84
  5. Step 5: Solve for x
    x = 42,008,120,259.84/190,886.40
  6. Step 6: Final answer
    x = 220,068.69

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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.