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Finding the Fourth Proportional to 349,665.60, 525,016.80 and 209,697.60

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Solution

The fourth proportional to 349,665.60, 525,016.80 and 209,697.60 is: 314,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,665.60 : 525,016.80 = 209,697.60 : x
  2. Step 2: Convert to fraction form
    349,665.60/525,016.80 = 209,697.60/x
  3. Step 3: Cross multiply
    349,665.60x = 525,016.80 × 209,697.60
  4. Step 4: Simplify right side
    349,665.60x = 110,094,762,919.68
  5. Step 5: Solve for x
    x = 110,094,762,919.68/349,665.60
  6. Step 6: Final answer
    x = 314,857.29

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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.