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Finding the Fourth Proportional to 478,990.98, 660,992.40 and 264,140.10

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Solution

The fourth proportional to 478,990.98, 660,992.40 and 264,140.10 is: 364,504.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,990.98 : 660,992.40 = 264,140.10 : x
  2. Step 2: Convert to fraction form
    478,990.98/660,992.40 = 264,140.10/x
  3. Step 3: Cross multiply
    478,990.98x = 660,992.40 × 264,140.10
  4. Step 4: Simplify right side
    478,990.98x = 174,594,598,635.24
  5. Step 5: Solve for x
    x = 174,594,598,635.24/478,990.98
  6. Step 6: Final answer
    x = 364,504.98

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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.