Home / 315,623.40-435,557.03-172,383.45

Finding the Fourth Proportional to 315,623.40, 435,557.03 and 172,383.45

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Solution

The fourth proportional to 315,623.40, 435,557.03 and 172,383.45 is: 237,887.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,623.40 : 435,557.03 = 172,383.45 : x
  2. Step 2: Convert to fraction form
    315,623.40/435,557.03 = 172,383.45/x
  3. Step 3: Cross multiply
    315,623.40x = 435,557.03 × 172,383.45
  4. Step 4: Simplify right side
    315,623.40x = 75,082,822,641.24
  5. Step 5: Solve for x
    x = 75,082,822,641.24/315,623.40
  6. Step 6: Final answer
    x = 237,887.38

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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.