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Finding the Fourth Proportional to 302,079.30, 416,765.67 and 187,316.58

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Solution

The fourth proportional to 302,079.30, 416,765.67 and 187,316.58 is: 258,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,079.30 : 416,765.67 = 187,316.58 : x
  2. Step 2: Convert to fraction form
    302,079.30/416,765.67 = 187,316.58/x
  3. Step 3: Cross multiply
    302,079.30x = 416,765.67 × 187,316.58
  4. Step 4: Simplify right side
    302,079.30x = 78,067,119,965.81
  5. Step 5: Solve for x
    x = 78,067,119,965.81/302,079.30
  6. Step 6: Final answer
    x = 258,432.54

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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.