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Finding the Fourth Proportional to 191,288.20, 286,586.70 and 163,640.20

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Solution

The fourth proportional to 191,288.20, 286,586.70 and 163,640.20 is: 245,164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,288.20 : 286,586.70 = 163,640.20 : x
  2. Step 2: Convert to fraction form
    191,288.20/286,586.70 = 163,640.20/x
  3. Step 3: Cross multiply
    191,288.20x = 286,586.70 × 163,640.20
  4. Step 4: Simplify right side
    191,288.20x = 46,897,104,905.34
  5. Step 5: Solve for x
    x = 46,897,104,905.34/191,288.20
  6. Step 6: Final answer
    x = 245,164.65

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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.