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Finding the Fourth Proportional to 354,578.40, 531,752.40 and 117,880.80

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Solution

The fourth proportional to 354,578.40, 531,752.40 and 117,880.80 is: 176,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,578.40 : 531,752.40 = 117,880.80 : x
  2. Step 2: Convert to fraction form
    354,578.40/531,752.40 = 117,880.80/x
  3. Step 3: Cross multiply
    354,578.40x = 531,752.40 × 117,880.80
  4. Step 4: Simplify right side
    354,578.40x = 62,683,398,313.92
  5. Step 5: Solve for x
    x = 62,683,398,313.92/354,578.40
  6. Step 6: Final answer
    x = 176,782.90

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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.