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Finding the Fourth Proportional to 317,404.88, 438,017.42 and 172,210.66

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Solution

The fourth proportional to 317,404.88, 438,017.42 and 172,210.66 is: 237,650.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,404.88 : 438,017.42 = 172,210.66 : x
  2. Step 2: Convert to fraction form
    317,404.88/438,017.42 = 172,210.66/x
  3. Step 3: Cross multiply
    317,404.88x = 438,017.42 × 172,210.66
  4. Step 4: Simplify right side
    317,404.88x = 75,431,268,325.18
  5. Step 5: Solve for x
    x = 75,431,268,325.18/317,404.88
  6. Step 6: Final answer
    x = 237,650.00

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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.