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Finding the Fourth Proportional to 346,740.96, 478,536.48 and 210,764.64

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Solution

The fourth proportional to 346,740.96, 478,536.48 and 210,764.64 is: 290,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,740.96 : 478,536.48 = 210,764.64 : x
  2. Step 2: Convert to fraction form
    346,740.96/478,536.48 = 210,764.64/x
  3. Step 3: Cross multiply
    346,740.96x = 478,536.48 × 210,764.64
  4. Step 4: Simplify right side
    346,740.96x = 100,858,568,934.07
  5. Step 5: Solve for x
    x = 100,858,568,934.07/346,740.96
  6. Step 6: Final answer
    x = 290,875.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.