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Finding the Fourth Proportional to 368,407.40, 552,588.54 and 216,688.38

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Solution

The fourth proportional to 368,407.40, 552,588.54 and 216,688.38 is: 325,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,407.40 : 552,588.54 = 216,688.38 : x
  2. Step 2: Convert to fraction form
    368,407.40/552,588.54 = 216,688.38/x
  3. Step 3: Cross multiply
    368,407.40x = 552,588.54 × 216,688.38
  4. Step 4: Simplify right side
    368,407.40x = 119,739,515,539.17
  5. Step 5: Solve for x
    x = 119,739,515,539.17/368,407.40
  6. Step 6: Final answer
    x = 325,019.30

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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.