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Finding the Fourth Proportional to 217,783.40, 300,588.58 and 156,692.84

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Solution

The fourth proportional to 217,783.40, 300,588.58 and 156,692.84 is: 216,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,783.40 : 300,588.58 = 156,692.84 : x
  2. Step 2: Convert to fraction form
    217,783.40/300,588.58 = 156,692.84/x
  3. Step 3: Cross multiply
    217,783.40x = 300,588.58 × 156,692.84
  4. Step 4: Simplify right side
    217,783.40x = 47,100,078,271.77
  5. Step 5: Solve for x
    x = 47,100,078,271.77/217,783.40
  6. Step 6: Final answer
    x = 216,270.29

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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.