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Finding the Fourth Proportional to 324,692.60, 487,038.90 and 218,404.40

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Solution

The fourth proportional to 324,692.60, 487,038.90 and 218,404.40 is: 327,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,692.60 : 487,038.90 = 218,404.40 : x
  2. Step 2: Convert to fraction form
    324,692.60/487,038.90 = 218,404.40/x
  3. Step 3: Cross multiply
    324,692.60x = 487,038.90 × 218,404.40
  4. Step 4: Simplify right side
    324,692.60x = 106,371,438,731.16
  5. Step 5: Solve for x
    x = 106,371,438,731.16/324,692.60
  6. Step 6: Final answer
    x = 327,606.60

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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.