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Finding the Fourth Proportional to 315,455.90, 435,353.99 and 179,495.58

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Solution

The fourth proportional to 315,455.90, 435,353.99 and 179,495.58 is: 247,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,455.90 : 435,353.99 = 179,495.58 : x
  2. Step 2: Convert to fraction form
    315,455.90/435,353.99 = 179,495.58/x
  3. Step 3: Cross multiply
    315,455.90x = 435,353.99 × 179,495.58
  4. Step 4: Simplify right side
    315,455.90x = 78,144,116,940.36
  5. Step 5: Solve for x
    x = 78,144,116,940.36/315,455.90
  6. Step 6: Final answer
    x = 247,718.04

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1.5x scale

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.