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Finding the Fourth Proportional to 328,980.10, 492,595.35 and 210,007.30

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Solution

The fourth proportional to 328,980.10, 492,595.35 and 210,007.30 is: 314,452.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,980.10 : 492,595.35 = 210,007.30 : x
  2. Step 2: Convert to fraction form
    328,980.10/492,595.35 = 210,007.30/x
  3. Step 3: Cross multiply
    328,980.10x = 492,595.35 × 210,007.30
  4. Step 4: Simplify right side
    328,980.10x = 103,448,619,446.06
  5. Step 5: Solve for x
    x = 103,448,619,446.06/328,980.10
  6. Step 6: Final answer
    x = 314,452.51

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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.