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Finding the Fourth Proportional to 228,583.86, 342,549.09 and 128,534.07

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Solution

The fourth proportional to 228,583.86, 342,549.09 and 128,534.07 is: 192,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,583.86 : 342,549.09 = 128,534.07 : x
  2. Step 2: Convert to fraction form
    228,583.86/342,549.09 = 128,534.07/x
  3. Step 3: Cross multiply
    228,583.86x = 342,549.09 × 128,534.07
  4. Step 4: Simplify right side
    228,583.86x = 44,029,228,712.50
  5. Step 5: Solve for x
    x = 44,029,228,712.50/228,583.86
  6. Step 6: Final answer
    x = 192,617.40

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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.