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Finding the Fourth Proportional to 486,133.52, 728,699.88 and 186,534.32

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Solution

The fourth proportional to 486,133.52, 728,699.88 and 186,534.32 is: 279,609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,133.52 : 728,699.88 = 186,534.32 : x
  2. Step 2: Convert to fraction form
    486,133.52/728,699.88 = 186,534.32/x
  3. Step 3: Cross multiply
    486,133.52x = 728,699.88 × 186,534.32
  4. Step 4: Simplify right side
    486,133.52x = 135,927,536,599.88
  5. Step 5: Solve for x
    x = 135,927,536,599.88/486,133.52
  6. Step 6: Final answer
    x = 279,609.47

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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.