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Finding the Fourth Proportional to 243,328.86, 365,014.92 and 85,558.68

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Solution

The fourth proportional to 243,328.86, 365,014.92 and 85,558.68 is: 128,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,328.86 : 365,014.92 = 85,558.68 : x
  2. Step 2: Convert to fraction form
    243,328.86/365,014.92 = 85,558.68/x
  3. Step 3: Cross multiply
    243,328.86x = 365,014.92 × 85,558.68
  4. Step 4: Simplify right side
    243,328.86x = 31,230,194,735.51
  5. Step 5: Solve for x
    x = 31,230,194,735.51/243,328.86
  6. Step 6: Final answer
    x = 128,345.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.