Home / 317,582.07-438,261.37-172,390.74

Finding the Fourth Proportional to 317,582.07, 438,261.37 and 172,390.74

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Solution

The fourth proportional to 317,582.07, 438,261.37 and 172,390.74 is: 237,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,582.07 : 438,261.37 = 172,390.74 : x
  2. Step 2: Convert to fraction form
    317,582.07/438,261.37 = 172,390.74/x
  3. Step 3: Cross multiply
    317,582.07x = 438,261.37 × 172,390.74
  4. Step 4: Simplify right side
    317,582.07x = 75,552,201,887.71
  5. Step 5: Solve for x
    x = 75,552,201,887.71/317,582.07
  6. Step 6: Final answer
    x = 237,898.20

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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.