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Finding the Fourth Proportional to 551,161.04, 760,543.48 and 309,470

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Solution

The fourth proportional to 551,161.04, 760,543.48 and 309,470 is: 427,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,161.04 : 760,543.48 = 309,470 : x
  2. Step 2: Convert to fraction form
    551,161.04/760,543.48 = 309,470/x
  3. Step 3: Cross multiply
    551,161.04x = 760,543.48 × 309,470
  4. Step 4: Simplify right side
    551,161.04x = 235,365,390,755.60
  5. Step 5: Solve for x
    x = 235,365,390,755.60/551,161.04
  6. Step 6: Final answer
    x = 427,035.61

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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.