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Finding the Fourth Proportional to 310,513.50, 428,504.82 and 174,570.12

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Solution

The fourth proportional to 310,513.50, 428,504.82 and 174,570.12 is: 240,904.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,513.50 : 428,504.82 = 174,570.12 : x
  2. Step 2: Convert to fraction form
    310,513.50/428,504.82 = 174,570.12/x
  3. Step 3: Cross multiply
    310,513.50x = 428,504.82 × 174,570.12
  4. Step 4: Simplify right side
    310,513.50x = 74,804,137,847.98
  5. Step 5: Solve for x
    x = 74,804,137,847.98/310,513.50
  6. Step 6: Final answer
    x = 240,904.62

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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.