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Finding the Fourth Proportional to 485,716.85, 670,292.17 and 270,870.49

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Solution

The fourth proportional to 485,716.85, 670,292.17 and 270,870.49 is: 373,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,716.85 : 670,292.17 = 270,870.49 : x
  2. Step 2: Convert to fraction form
    485,716.85/670,292.17 = 270,870.49/x
  3. Step 3: Cross multiply
    485,716.85x = 670,292.17 × 270,870.49
  4. Step 4: Simplify right side
    485,716.85x = 181,562,366,178.16
  5. Step 5: Solve for x
    x = 181,562,366,178.16/485,716.85
  6. Step 6: Final answer
    x = 373,802.90

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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.