Home / 315,868.26-435,897.15-172,628.28

Finding the Fourth Proportional to 315,868.26, 435,897.15 and 172,628.28

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Solution

The fourth proportional to 315,868.26, 435,897.15 and 172,628.28 is: 238,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,868.26 : 435,897.15 = 172,628.28 : x
  2. Step 2: Convert to fraction form
    315,868.26/435,897.15 = 172,628.28/x
  3. Step 3: Cross multiply
    315,868.26x = 435,897.15 × 172,628.28
  4. Step 4: Simplify right side
    315,868.26x = 75,248,175,261.40
  5. Step 5: Solve for x
    x = 75,248,175,261.40/315,868.26
  6. Step 6: Final answer
    x = 238,226.45

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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.