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Finding the Fourth Proportional to 380,692.64, 525,332.96 and 210,914.40

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Solution

The fourth proportional to 380,692.64, 525,332.96 and 210,914.40 is: 291,049.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,692.64 : 525,332.96 = 210,914.40 : x
  2. Step 2: Convert to fraction form
    380,692.64/525,332.96 = 210,914.40/x
  3. Step 3: Cross multiply
    380,692.64x = 525,332.96 × 210,914.40
  4. Step 4: Simplify right side
    380,692.64x = 110,800,286,058.62
  5. Step 5: Solve for x
    x = 110,800,286,058.62/380,692.64
  6. Step 6: Final answer
    x = 291,049.19

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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.