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Finding the Fourth Proportional to 485,801.17, 670,406.80 and 270,955.15

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Solution

The fourth proportional to 485,801.17, 670,406.80 and 270,955.15 is: 373,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,801.17 : 670,406.80 = 270,955.15 : x
  2. Step 2: Convert to fraction form
    485,801.17/670,406.80 = 270,955.15/x
  3. Step 3: Cross multiply
    485,801.17x = 670,406.80 × 270,955.15
  4. Step 4: Simplify right side
    485,801.17x = 181,650,175,055.02
  5. Step 5: Solve for x
    x = 181,650,175,055.02/485,801.17
  6. Step 6: Final answer
    x = 373,918.77

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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.