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Finding the Fourth Proportional to 310,532.76, 428,535.72 and 174,574.32

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Solution

The fourth proportional to 310,532.76, 428,535.72 and 174,574.32 is: 240,912.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,532.76 : 428,535.72 = 174,574.32 : x
  2. Step 2: Convert to fraction form
    310,532.76/428,535.72 = 174,574.32/x
  3. Step 3: Cross multiply
    310,532.76x = 428,535.72 × 174,574.32
  4. Step 4: Simplify right side
    310,532.76x = 74,811,331,914.71
  5. Step 5: Solve for x
    x = 74,811,331,914.71/310,532.76
  6. Step 6: Final answer
    x = 240,912.85

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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.