Home / 315,479.07-435,362.58-172,242.36

Finding the Fourth Proportional to 315,479.07, 435,362.58 and 172,242.36

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Solution

The fourth proportional to 315,479.07, 435,362.58 and 172,242.36 is: 237,695.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,479.07 : 435,362.58 = 172,242.36 : x
  2. Step 2: Convert to fraction form
    315,479.07/435,362.58 = 172,242.36/x
  3. Step 3: Cross multiply
    315,479.07x = 435,362.58 × 172,242.36
  4. Step 4: Simplify right side
    315,479.07x = 74,987,878,234.89
  5. Step 5: Solve for x
    x = 74,987,878,234.89/315,479.07
  6. Step 6: Final answer
    x = 237,695.26

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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.