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Finding the Fourth Proportional to 551,230.36, 760,688.22 and 309,514.84

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Solution

The fourth proportional to 551,230.36, 760,688.22 and 309,514.84 is: 427,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,230.36 : 760,688.22 = 309,514.84 : x
  2. Step 2: Convert to fraction form
    551,230.36/760,688.22 = 309,514.84/x
  3. Step 3: Cross multiply
    551,230.36x = 760,688.22 × 309,514.84
  4. Step 4: Simplify right side
    551,230.36x = 235,444,292,703.19
  5. Step 5: Solve for x
    x = 235,444,292,703.19/551,230.36
  6. Step 6: Final answer
    x = 427,125.05

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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.