Home / 219,931.36-303,578.40-156,453.28

Finding the Fourth Proportional to 219,931.36, 303,578.40 and 156,453.28

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Solution

The fourth proportional to 219,931.36, 303,578.40 and 156,453.28 is: 215,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,931.36 : 303,578.40 = 156,453.28 : x
  2. Step 2: Convert to fraction form
    219,931.36/303,578.40 = 156,453.28/x
  3. Step 3: Cross multiply
    219,931.36x = 303,578.40 × 156,453.28
  4. Step 4: Simplify right side
    219,931.36x = 47,495,836,417.15
  5. Step 5: Solve for x
    x = 47,495,836,417.15/219,931.36
  6. Step 6: Final answer
    x = 215,957.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.