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Finding the Fourth Proportional to 171,620.10, 257,430.15 and 45,260.10

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Solution

The fourth proportional to 171,620.10, 257,430.15 and 45,260.10 is: 67,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,620.10 : 257,430.15 = 45,260.10 : x
  2. Step 2: Convert to fraction form
    171,620.10/257,430.15 = 45,260.10/x
  3. Step 3: Cross multiply
    171,620.10x = 257,430.15 × 45,260.10
  4. Step 4: Simplify right side
    171,620.10x = 11,651,314,332.02
  5. Step 5: Solve for x
    x = 11,651,314,332.02/171,620.10
  6. Step 6: Final answer
    x = 67,890.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.