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Finding the Fourth Proportional to 478,971.90, 660,985.83 and 264,119.58

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Solution

The fourth proportional to 478,971.90, 660,985.83 and 264,119.58 is: 364,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,971.90 : 660,985.83 = 264,119.58 : x
  2. Step 2: Convert to fraction form
    478,971.90/660,985.83 = 264,119.58/x
  3. Step 3: Cross multiply
    478,971.90x = 660,985.83 × 264,119.58
  4. Step 4: Simplify right side
    478,971.90x = 174,579,299,805.55
  5. Step 5: Solve for x
    x = 174,579,299,805.55/478,971.90
  6. Step 6: Final answer
    x = 364,487.56

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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.