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Finding the Fourth Proportional to 421,386.18, 632,079.27 and 184,781.94

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Solution

The fourth proportional to 421,386.18, 632,079.27 and 184,781.94 is: 277,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,386.18 : 632,079.27 = 184,781.94 : x
  2. Step 2: Convert to fraction form
    421,386.18/632,079.27 = 184,781.94/x
  3. Step 3: Cross multiply
    421,386.18x = 632,079.27 × 184,781.94
  4. Step 4: Simplify right side
    421,386.18x = 116,796,833,744.38
  5. Step 5: Solve for x
    x = 116,796,833,744.38/421,386.18
  6. Step 6: Final answer
    x = 277,172.91

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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.