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Finding the Fourth Proportional to 306,720.94, 423,288.72 and 170,763.69

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Solution

The fourth proportional to 306,720.94, 423,288.72 and 170,763.69 is: 235,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,720.94 : 423,288.72 = 170,763.69 : x
  2. Step 2: Convert to fraction form
    306,720.94/423,288.72 = 170,763.69/x
  3. Step 3: Cross multiply
    306,720.94x = 423,288.72 × 170,763.69
  4. Step 4: Simplify right side
    306,720.94x = 72,282,346,070.32
  5. Step 5: Solve for x
    x = 72,282,346,070.32/306,720.94
  6. Step 6: Final answer
    x = 235,661.59

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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.