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Finding the Fourth Proportional to 302,999.50, 418,139.20 and 167,035.76

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Solution

The fourth proportional to 302,999.50, 418,139.20 and 167,035.76 is: 230,509.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,999.50 : 418,139.20 = 167,035.76 : x
  2. Step 2: Convert to fraction form
    302,999.50/418,139.20 = 167,035.76/x
  3. Step 3: Cross multiply
    302,999.50x = 418,139.20 × 167,035.76
  4. Step 4: Simplify right side
    302,999.50x = 69,844,199,057.79
  5. Step 5: Solve for x
    x = 69,844,199,057.79/302,999.50
  6. Step 6: Final answer
    x = 230,509.29

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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.