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Finding the Fourth Proportional to 326,166.90, 488,848.70 and 155,478.30

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Solution

The fourth proportional to 326,166.90, 488,848.70 and 155,478.30 is: 233,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,166.90 : 488,848.70 = 155,478.30 : x
  2. Step 2: Convert to fraction form
    326,166.90/488,848.70 = 155,478.30/x
  3. Step 3: Cross multiply
    326,166.90x = 488,848.70 × 155,478.30
  4. Step 4: Simplify right side
    326,166.90x = 76,005,364,833.21
  5. Step 5: Solve for x
    x = 76,005,364,833.21/326,166.90
  6. Step 6: Final answer
    x = 233,025.99

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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.