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Finding the Fourth Proportional to 485,858.27, 670,482.65 and 270,998.16

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Solution

The fourth proportional to 485,858.27, 670,482.65 and 270,998.16 is: 373,976.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,858.27 : 670,482.65 = 270,998.16 : x
  2. Step 2: Convert to fraction form
    485,858.27/670,482.65 = 270,998.16/x
  3. Step 3: Cross multiply
    485,858.27x = 670,482.65 × 270,998.16
  4. Step 4: Simplify right side
    485,858.27x = 181,699,564,461.92
  5. Step 5: Solve for x
    x = 181,699,564,461.92/485,858.27
  6. Step 6: Final answer
    x = 373,976.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.