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Finding the Fourth Proportional to 302,707.20, 453,736.80 and 102,842.40

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Solution

The fourth proportional to 302,707.20, 453,736.80 and 102,842.40 is: 154,153.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,707.20 : 453,736.80 = 102,842.40 : x
  2. Step 2: Convert to fraction form
    302,707.20/453,736.80 = 102,842.40/x
  3. Step 3: Cross multiply
    302,707.20x = 453,736.80 × 102,842.40
  4. Step 4: Simplify right side
    302,707.20x = 46,663,381,480.32
  5. Step 5: Solve for x
    x = 46,663,381,480.32/302,707.20
  6. Step 6: Final answer
    x = 154,153.52

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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.