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Finding the Fourth Proportional to 302,272, 453,417.60 and 91,911.76

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Solution

The fourth proportional to 302,272, 453,417.60 and 91,911.76 is: 137,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,272 : 453,417.60 = 91,911.76 : x
  2. Step 2: Convert to fraction form
    302,272/453,417.60 = 91,911.76/x
  3. Step 3: Cross multiply
    302,272x = 453,417.60 × 91,911.76
  4. Step 4: Simplify right side
    302,272x = 41,674,409,630.98
  5. Step 5: Solve for x
    x = 41,674,409,630.98/302,272
  6. Step 6: Final answer
    x = 137,870.56

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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.