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Finding the Fourth Proportional to 317,172, 437,657.13 and 173,894.34

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Solution

The fourth proportional to 317,172, 437,657.13 and 173,894.34 is: 239,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,172 : 437,657.13 = 173,894.34 : x
  2. Step 2: Convert to fraction form
    317,172/437,657.13 = 173,894.34/x
  3. Step 3: Cross multiply
    317,172x = 437,657.13 × 173,894.34
  4. Step 4: Simplify right side
    317,172x = 76,106,097,767.64
  5. Step 5: Solve for x
    x = 76,106,097,767.64/317,172
  6. Step 6: Final answer
    x = 239,952.13

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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.