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Finding the Fourth Proportional to 485,700.16, 670,270.58 and 267,917.17

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Solution

The fourth proportional to 485,700.16, 670,270.58 and 267,917.17 is: 369,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,700.16 : 670,270.58 = 267,917.17 : x
  2. Step 2: Convert to fraction form
    485,700.16/670,270.58 = 267,917.17/x
  3. Step 3: Cross multiply
    485,700.16x = 670,270.58 × 267,917.17
  4. Step 4: Simplify right side
    485,700.16x = 179,576,995,588.27
  5. Step 5: Solve for x
    x = 179,576,995,588.27/485,700.16
  6. Step 6: Final answer
    x = 369,728.10

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1.5x scale

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.