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Finding the Fourth Proportional to 209,992.30, 314,988.45 and 201,244.30

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Solution

The fourth proportional to 209,992.30, 314,988.45 and 201,244.30 is: 301,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,992.30 : 314,988.45 = 201,244.30 : x
  2. Step 2: Convert to fraction form
    209,992.30/314,988.45 = 201,244.30/x
  3. Step 3: Cross multiply
    209,992.30x = 314,988.45 × 201,244.30
  4. Step 4: Simplify right side
    209,992.30x = 63,389,630,128.34
  5. Step 5: Solve for x
    x = 63,389,630,128.34/209,992.30
  6. Step 6: Final answer
    x = 301,866.45

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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.