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Finding the Fourth Proportional to 368,904.92, 508,016.81 and 320,484.74

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Solution

The fourth proportional to 368,904.92, 508,016.81 and 320,484.74 is: 441,337.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,904.92 : 508,016.81 = 320,484.74 : x
  2. Step 2: Convert to fraction form
    368,904.92/508,016.81 = 320,484.74/x
  3. Step 3: Cross multiply
    368,904.92x = 508,016.81 × 320,484.74
  4. Step 4: Simplify right side
    368,904.92x = 162,811,632,728.40
  5. Step 5: Solve for x
    x = 162,811,632,728.40/368,904.92
  6. Step 6: Final answer
    x = 441,337.66

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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.