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Finding the Fourth Proportional to 274,460.40, 411,949.80 and 169,484.40

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Solution

The fourth proportional to 274,460.40, 411,949.80 and 169,484.40 is: 254,386.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,460.40 : 411,949.80 = 169,484.40 : x
  2. Step 2: Convert to fraction form
    274,460.40/411,949.80 = 169,484.40/x
  3. Step 3: Cross multiply
    274,460.40x = 411,949.80 × 169,484.40
  4. Step 4: Simplify right side
    274,460.40x = 69,819,064,683.12
  5. Step 5: Solve for x
    x = 69,819,064,683.12/274,460.40
  6. Step 6: Final answer
    x = 254,386.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.