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Finding the Fourth Proportional to 316,698.48, 437,025.24 and 173,430

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Solution

The fourth proportional to 316,698.48, 437,025.24 and 173,430 is: 239,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,698.48 : 437,025.24 = 173,430 : x
  2. Step 2: Convert to fraction form
    316,698.48/437,025.24 = 173,430/x
  3. Step 3: Cross multiply
    316,698.48x = 437,025.24 × 173,430
  4. Step 4: Simplify right side
    316,698.48x = 75,793,287,373.20
  5. Step 5: Solve for x
    x = 75,793,287,373.20/316,698.48
  6. Step 6: Final answer
    x = 239,323.18

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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.