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Finding the Fourth Proportional to 260,237.34, 390,090.15 and 147,679.83

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Solution

The fourth proportional to 260,237.34, 390,090.15 and 147,679.83 is: 221,368.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,237.34 : 390,090.15 = 147,679.83 : x
  2. Step 2: Convert to fraction form
    260,237.34/390,090.15 = 147,679.83/x
  3. Step 3: Cross multiply
    260,237.34x = 390,090.15 × 147,679.83
  4. Step 4: Simplify right side
    260,237.34x = 57,608,447,036.67
  5. Step 5: Solve for x
    x = 57,608,447,036.67/260,237.34
  6. Step 6: Final answer
    x = 221,368.87

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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.