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Finding the Fourth Proportional to 320,395.64, 480,666.35 and 170,556.98

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Solution

The fourth proportional to 320,395.64, 480,666.35 and 170,556.98 is: 255,874.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,395.64 : 480,666.35 = 170,556.98 : x
  2. Step 2: Convert to fraction form
    320,395.64/480,666.35 = 170,556.98/x
  3. Step 3: Cross multiply
    320,395.64x = 480,666.35 × 170,556.98
  4. Step 4: Simplify right side
    320,395.64x = 81,980,999,066.68
  5. Step 5: Solve for x
    x = 81,980,999,066.68/320,395.64
  6. Step 6: Final answer
    x = 255,874.27

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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.