Home / 315,509.02-435,399.15-172,268.62

Finding the Fourth Proportional to 315,509.02, 435,399.15 and 172,268.62

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Solution

The fourth proportional to 315,509.02, 435,399.15 and 172,268.62 is: 237,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,509.02 : 435,399.15 = 172,268.62 : x
  2. Step 2: Convert to fraction form
    315,509.02/435,399.15 = 172,268.62/x
  3. Step 3: Cross multiply
    315,509.02x = 435,399.15 × 172,268.62
  4. Step 4: Simplify right side
    315,509.02x = 75,005,610,719.67
  5. Step 5: Solve for x
    x = 75,005,610,719.67/315,509.02
  6. Step 6: Final answer
    x = 237,728.90

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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.