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Finding the Fourth Proportional to 326,415.60, 488,967.30 and 220,127.40

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Solution

The fourth proportional to 326,415.60, 488,967.30 and 220,127.40 is: 329,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,415.60 : 488,967.30 = 220,127.40 : x
  2. Step 2: Convert to fraction form
    326,415.60/488,967.30 = 220,127.40/x
  3. Step 3: Cross multiply
    326,415.60x = 488,967.30 × 220,127.40
  4. Step 4: Simplify right side
    326,415.60x = 107,635,100,434.02
  5. Step 5: Solve for x
    x = 107,635,100,434.02/326,415.60
  6. Step 6: Final answer
    x = 329,748.64

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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.