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Finding the Fourth Proportional to 665,385.04, 998,081.88 and 266,059.36

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Solution

The fourth proportional to 665,385.04, 998,081.88 and 266,059.36 is: 399,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,385.04 : 998,081.88 = 266,059.36 : x
  2. Step 2: Convert to fraction form
    665,385.04/998,081.88 = 266,059.36/x
  3. Step 3: Cross multiply
    665,385.04x = 998,081.88 × 266,059.36
  4. Step 4: Simplify right side
    665,385.04x = 265,549,026,220.40
  5. Step 5: Solve for x
    x = 265,549,026,220.40/665,385.04
  6. Step 6: Final answer
    x = 399,090.77

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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.