Home / 315,280.16-435,087.72-172,043.36

Finding the Fourth Proportional to 315,280.16, 435,087.72 and 172,043.36

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Solution

The fourth proportional to 315,280.16, 435,087.72 and 172,043.36 is: 237,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,280.16 : 435,087.72 = 172,043.36 : x
  2. Step 2: Convert to fraction form
    315,280.16/435,087.72 = 172,043.36/x
  3. Step 3: Cross multiply
    315,280.16x = 435,087.72 × 172,043.36
  4. Step 4: Simplify right side
    315,280.16x = 74,853,953,243.54
  5. Step 5: Solve for x
    x = 74,853,953,243.54/315,280.16
  6. Step 6: Final answer
    x = 237,420.44

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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.