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Finding the Fourth Proportional to 346,893.72, 478,860.89 and 210,971.33

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Solution

The fourth proportional to 346,893.72, 478,860.89 and 210,971.33 is: 291,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,893.72 : 478,860.89 = 210,971.33 : x
  2. Step 2: Convert to fraction form
    346,893.72/478,860.89 = 210,971.33/x
  3. Step 3: Cross multiply
    346,893.72x = 478,860.89 × 210,971.33
  4. Step 4: Simplify right side
    346,893.72x = 101,025,915,399.12
  5. Step 5: Solve for x
    x = 101,025,915,399.12/346,893.72
  6. Step 6: Final answer
    x = 291,230.17

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1.5x scale

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.