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Finding the Fourth Proportional to 315,525.36, 435,425.54 and 172,282.35

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Solution

The fourth proportional to 315,525.36, 435,425.54 and 172,282.35 is: 237,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,525.36 : 435,425.54 = 172,282.35 : x
  2. Step 2: Convert to fraction form
    315,525.36/435,425.54 = 172,282.35/x
  3. Step 3: Cross multiply
    315,525.36x = 435,425.54 × 172,282.35
  4. Step 4: Simplify right side
    315,525.36x = 75,016,134,419.81
  5. Step 5: Solve for x
    x = 75,016,134,419.81/315,525.36
  6. Step 6: Final answer
    x = 237,749.94

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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.