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Finding the Fourth Proportional to 310,534.76, 428,538.48 and 174,576.32

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Solution

The fourth proportional to 310,534.76, 428,538.48 and 174,576.32 is: 240,915.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,534.76 : 428,538.48 = 174,576.32 : x
  2. Step 2: Convert to fraction form
    310,534.76/428,538.48 = 174,576.32/x
  3. Step 3: Cross multiply
    310,534.76x = 428,538.48 × 174,576.32
  4. Step 4: Simplify right side
    310,534.76x = 74,812,670,816.79
  5. Step 5: Solve for x
    x = 74,812,670,816.79/310,534.76
  6. Step 6: Final answer
    x = 240,915.61

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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.