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Finding the Fourth Proportional to 353,968.44, 531,030.36 and 260,189.88

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Solution

The fourth proportional to 353,968.44, 531,030.36 and 260,189.88 is: 390,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,968.44 : 531,030.36 = 260,189.88 : x
  2. Step 2: Convert to fraction form
    353,968.44/531,030.36 = 260,189.88/x
  3. Step 3: Cross multiply
    353,968.44x = 531,030.36 × 260,189.88
  4. Step 4: Simplify right side
    353,968.44x = 138,168,725,644.76
  5. Step 5: Solve for x
    x = 138,168,725,644.76/353,968.44
  6. Step 6: Final answer
    x = 390,341.93

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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.