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Finding the Fourth Proportional to 328,420.20, 492,630.30 and 118,079.40

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Solution

The fourth proportional to 328,420.20, 492,630.30 and 118,079.40 is: 177,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,420.20 : 492,630.30 = 118,079.40 : x
  2. Step 2: Convert to fraction form
    328,420.20/492,630.30 = 118,079.40/x
  3. Step 3: Cross multiply
    328,420.20x = 492,630.30 × 118,079.40
  4. Step 4: Simplify right side
    328,420.20x = 58,169,490,245.82
  5. Step 5: Solve for x
    x = 58,169,490,245.82/328,420.20
  6. Step 6: Final answer
    x = 177,119.10

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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.