Home / 302,688.20-454,058.40-78,046.64

Finding the Fourth Proportional to 302,688.20, 454,058.40 and 78,046.64

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Solution

The fourth proportional to 302,688.20, 454,058.40 and 78,046.64 is: 117,076.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,688.20 : 454,058.40 = 78,046.64 : x
  2. Step 2: Convert to fraction form
    302,688.20/454,058.40 = 78,046.64/x
  3. Step 3: Cross multiply
    302,688.20x = 454,058.40 × 78,046.64
  4. Step 4: Simplify right side
    302,688.20x = 35,437,732,483.78
  5. Step 5: Solve for x
    x = 35,437,732,483.78/302,688.20
  6. Step 6: Final answer
    x = 117,076.69

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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.