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Finding the Fourth Proportional to 302,134.66, 453,401.64 and 142,256.31

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Solution

The fourth proportional to 302,134.66, 453,401.64 and 142,256.31 is: 213,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,134.66 : 453,401.64 = 142,256.31 : x
  2. Step 2: Convert to fraction form
    302,134.66/453,401.64 = 142,256.31/x
  3. Step 3: Cross multiply
    302,134.66x = 453,401.64 × 142,256.31
  4. Step 4: Simplify right side
    302,134.66x = 64,499,244,254.35
  5. Step 5: Solve for x
    x = 64,499,244,254.35/302,134.66
  6. Step 6: Final answer
    x = 213,478.47

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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.