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Finding the Fourth Proportional to 485,820.63, 670,433.49 and 270,955.17

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Solution

The fourth proportional to 485,820.63, 670,433.49 and 270,955.17 is: 373,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,820.63 : 670,433.49 = 270,955.17 : x
  2. Step 2: Convert to fraction form
    485,820.63/670,433.49 = 270,955.17/x
  3. Step 3: Cross multiply
    485,820.63x = 670,433.49 × 270,955.17
  4. Step 4: Simplify right side
    485,820.63x = 181,657,420,256.64
  5. Step 5: Solve for x
    x = 181,657,420,256.64/485,820.63
  6. Step 6: Final answer
    x = 373,918.70

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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.