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Finding the Fourth Proportional to 540,420.90, 810,676.35 and 161,316.60

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Solution

The fourth proportional to 540,420.90, 810,676.35 and 161,316.60 is: 241,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,420.90 : 810,676.35 = 161,316.60 : x
  2. Step 2: Convert to fraction form
    540,420.90/810,676.35 = 161,316.60/x
  3. Step 3: Cross multiply
    540,420.90x = 810,676.35 × 161,316.60
  4. Step 4: Simplify right side
    540,420.90x = 130,775,552,482.41
  5. Step 5: Solve for x
    x = 130,775,552,482.41/540,420.90
  6. Step 6: Final answer
    x = 241,988.33

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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.