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Finding the Fourth Proportional to 245,320.30, 367,980.45 and 210,328.30

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Solution

The fourth proportional to 245,320.30, 367,980.45 and 210,328.30 is: 315,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,320.30 : 367,980.45 = 210,328.30 : x
  2. Step 2: Convert to fraction form
    245,320.30/367,980.45 = 210,328.30/x
  3. Step 3: Cross multiply
    245,320.30x = 367,980.45 × 210,328.30
  4. Step 4: Simplify right side
    245,320.30x = 77,396,702,481.74
  5. Step 5: Solve for x
    x = 77,396,702,481.74/245,320.30
  6. Step 6: Final answer
    x = 315,492.45

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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.