Home / 315,343.05-435,174.62-172,106.25

Finding the Fourth Proportional to 315,343.05, 435,174.62 and 172,106.25

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Solution

The fourth proportional to 315,343.05, 435,174.62 and 172,106.25 is: 237,507.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,343.05 : 435,174.62 = 172,106.25 : x
  2. Step 2: Convert to fraction form
    315,343.05/435,174.62 = 172,106.25/x
  3. Step 3: Cross multiply
    315,343.05x = 435,174.62 × 172,106.25
  4. Step 4: Simplify right side
    315,343.05x = 74,896,271,082.84
  5. Step 5: Solve for x
    x = 74,896,271,082.84/315,343.05
  6. Step 6: Final answer
    x = 237,507.28

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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.