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Finding the Fourth Proportional to 317,423.07, 438,042.60 and 174,185.51

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Solution

The fourth proportional to 317,423.07, 438,042.60 and 174,185.51 is: 240,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,423.07 : 438,042.60 = 174,185.51 : x
  2. Step 2: Convert to fraction form
    317,423.07/438,042.60 = 174,185.51/x
  3. Step 3: Cross multiply
    317,423.07x = 438,042.60 × 174,185.51
  4. Step 4: Simplify right side
    317,423.07x = 76,300,671,492.51
  5. Step 5: Solve for x
    x = 76,300,671,492.51/317,423.07
  6. Step 6: Final answer
    x = 240,375.32

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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.