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Finding the Fourth Proportional to 317,484.63, 438,134.13 and 174,258

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Solution

The fourth proportional to 317,484.63, 438,134.13 and 174,258 is: 240,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,484.63 : 438,134.13 = 174,258 : x
  2. Step 2: Convert to fraction form
    317,484.63/438,134.13 = 174,258/x
  3. Step 3: Cross multiply
    317,484.63x = 438,134.13 × 174,258
  4. Step 4: Simplify right side
    317,484.63x = 76,348,377,225.54
  5. Step 5: Solve for x
    x = 76,348,377,225.54/317,484.63
  6. Step 6: Final answer
    x = 240,478.97

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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.