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Finding the Fourth Proportional to 260,483.55, 390,733.29 and 89,703.42

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Solution

The fourth proportional to 260,483.55, 390,733.29 and 89,703.42 is: 134,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,483.55 : 390,733.29 = 89,703.42 : x
  2. Step 2: Convert to fraction form
    260,483.55/390,733.29 = 89,703.42/x
  3. Step 3: Cross multiply
    260,483.55x = 390,733.29 × 89,703.42
  4. Step 4: Simplify right side
    260,483.55x = 35,050,112,420.85
  5. Step 5: Solve for x
    x = 35,050,112,420.85/260,483.55
  6. Step 6: Final answer
    x = 134,557.87

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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.