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Finding the Fourth Proportional to 260,561.47, 390,412.90 and 238,772.47

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Solution

The fourth proportional to 260,561.47, 390,412.90 and 238,772.47 is: 357,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,561.47 : 390,412.90 = 238,772.47 : x
  2. Step 2: Convert to fraction form
    260,561.47/390,412.90 = 238,772.47/x
  3. Step 3: Cross multiply
    260,561.47x = 390,412.90 × 238,772.47
  4. Step 4: Simplify right side
    260,561.47x = 93,219,852,452.86
  5. Step 5: Solve for x
    x = 93,219,852,452.86/260,561.47
  6. Step 6: Final answer
    x = 357,765.30

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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.