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Finding the Fourth Proportional to 317,133, 437,656.78 and 173,898.54

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Solution

The fourth proportional to 317,133, 437,656.78 and 173,898.54 is: 239,987.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,133 : 437,656.78 = 173,898.54 : x
  2. Step 2: Convert to fraction form
    317,133/437,656.78 = 173,898.54/x
  3. Step 3: Cross multiply
    317,133x = 437,656.78 × 173,898.54
  4. Step 4: Simplify right side
    317,133x = 76,107,875,063.10
  5. Step 5: Solve for x
    x = 76,107,875,063.10/317,133
  6. Step 6: Final answer
    x = 239,987.25

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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.