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Finding the Fourth Proportional to 325,579.20, 488,368.80 and 293,438.40

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Solution

The fourth proportional to 325,579.20, 488,368.80 and 293,438.40 is: 440,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,579.20 : 488,368.80 = 293,438.40 : x
  2. Step 2: Convert to fraction form
    325,579.20/488,368.80 = 293,438.40/x
  3. Step 3: Cross multiply
    325,579.20x = 488,368.80 × 293,438.40
  4. Step 4: Simplify right side
    325,579.20x = 143,306,159,281.92
  5. Step 5: Solve for x
    x = 143,306,159,281.92/325,579.20
  6. Step 6: Final answer
    x = 440,157.60

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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.