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Finding the Fourth Proportional to 485,856.13, 670,479.72 and 270,996.03

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Solution

The fourth proportional to 485,856.13, 670,479.72 and 270,996.03 is: 373,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,856.13 : 670,479.72 = 270,996.03 : x
  2. Step 2: Convert to fraction form
    485,856.13/670,479.72 = 270,996.03/x
  3. Step 3: Cross multiply
    485,856.13x = 670,479.72 × 270,996.03
  4. Step 4: Simplify right side
    485,856.13x = 181,697,342,315.51
  5. Step 5: Solve for x
    x = 181,697,342,315.51/485,856.13
  6. Step 6: Final answer
    x = 373,973.55

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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.