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Finding the Fourth Proportional to 310,243.80, 428,106.06 and 174,246.60

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Solution

The fourth proportional to 310,243.80, 428,106.06 and 174,246.60 is: 240,443.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,243.80 : 428,106.06 = 174,246.60 : x
  2. Step 2: Convert to fraction form
    310,243.80/428,106.06 = 174,246.60/x
  3. Step 3: Cross multiply
    310,243.80x = 428,106.06 × 174,246.60
  4. Step 4: Simplify right side
    310,243.80x = 74,596,025,394.40
  5. Step 5: Solve for x
    x = 74,596,025,394.40/310,243.80
  6. Step 6: Final answer
    x = 240,443.24

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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.