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Finding the Fourth Proportional to 328,047.60, 492,071.40 and 106,431.60

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Solution

The fourth proportional to 328,047.60, 492,071.40 and 106,431.60 is: 159,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,047.60 : 492,071.40 = 106,431.60 : x
  2. Step 2: Convert to fraction form
    328,047.60/492,071.40 = 106,431.60/x
  3. Step 3: Cross multiply
    328,047.60x = 492,071.40 × 106,431.60
  4. Step 4: Simplify right side
    328,047.60x = 52,371,946,416.24
  5. Step 5: Solve for x
    x = 52,371,946,416.24/328,047.60
  6. Step 6: Final answer
    x = 159,647.40

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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.