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Finding the Fourth Proportional to 389,099.55, 583,762.10 and 161,352.86

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Solution

The fourth proportional to 389,099.55, 583,762.10 and 161,352.86 is: 242,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,099.55 : 583,762.10 = 161,352.86 : x
  2. Step 2: Convert to fraction form
    389,099.55/583,762.10 = 161,352.86/x
  3. Step 3: Cross multiply
    389,099.55x = 583,762.10 × 161,352.86
  4. Step 4: Simplify right side
    389,099.55x = 94,191,680,669.03
  5. Step 5: Solve for x
    x = 94,191,680,669.03/389,099.55
  6. Step 6: Final answer
    x = 242,076.05

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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.