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Finding the Fourth Proportional to 386,051.60, 579,466.20 and 186,532.40

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Solution

The fourth proportional to 386,051.60, 579,466.20 and 186,532.40 is: 279,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,051.60 : 579,466.20 = 186,532.40 : x
  2. Step 2: Convert to fraction form
    386,051.60/579,466.20 = 186,532.40/x
  3. Step 3: Cross multiply
    386,051.60x = 579,466.20 × 186,532.40
  4. Step 4: Simplify right side
    386,051.60x = 108,089,221,004.88
  5. Step 5: Solve for x
    x = 108,089,221,004.88/386,051.60
  6. Step 6: Final answer
    x = 279,986.46

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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.