Home / 305,426.04-421,480-169,459.44

Finding the Fourth Proportional to 305,426.04, 421,480 and 169,459.44

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Solution

The fourth proportional to 305,426.04, 421,480 and 169,459.44 is: 233,849.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,426.04 : 421,480 = 169,459.44 : x
  2. Step 2: Convert to fraction form
    305,426.04/421,480 = 169,459.44/x
  3. Step 3: Cross multiply
    305,426.04x = 421,480 × 169,459.44
  4. Step 4: Simplify right side
    305,426.04x = 71,423,764,771.20
  5. Step 5: Solve for x
    x = 71,423,764,771.20/305,426.04
  6. Step 6: Final answer
    x = 233,849.62

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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.