Home / 315,427.02-435,272.64-172,159.26

Finding the Fourth Proportional to 315,427.02, 435,272.64 and 172,159.26

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Solution

The fourth proportional to 315,427.02, 435,272.64 and 172,159.26 is: 237,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,427.02 : 435,272.64 = 172,159.26 : x
  2. Step 2: Convert to fraction form
    315,427.02/435,272.64 = 172,159.26/x
  3. Step 3: Cross multiply
    315,427.02x = 435,272.64 × 172,159.26
  4. Step 4: Simplify right side
    315,427.02x = 74,936,215,600.65
  5. Step 5: Solve for x
    x = 74,936,215,600.65/315,427.02
  6. Step 6: Final answer
    x = 237,570.69

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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.