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Finding the Fourth Proportional to 368,125.60, 552,706.80 and 289,328.80

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Solution

The fourth proportional to 368,125.60, 552,706.80 and 289,328.80 is: 434,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,125.60 : 552,706.80 = 289,328.80 : x
  2. Step 2: Convert to fraction form
    368,125.60/552,706.80 = 289,328.80/x
  3. Step 3: Cross multiply
    368,125.60x = 552,706.80 × 289,328.80
  4. Step 4: Simplify right side
    368,125.60x = 159,913,995,195.84
  5. Step 5: Solve for x
    x = 159,913,995,195.84/368,125.60
  6. Step 6: Final answer
    x = 434,400.64

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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.