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Finding the Fourth Proportional to 551,108.55, 760,503.92 and 306,109.19

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Solution

The fourth proportional to 551,108.55, 760,503.92 and 306,109.19 is: 422,416.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,108.55 : 760,503.92 = 306,109.19 : x
  2. Step 2: Convert to fraction form
    551,108.55/760,503.92 = 306,109.19/x
  3. Step 3: Cross multiply
    551,108.55x = 760,503.92 × 306,109.19
  4. Step 4: Simplify right side
    551,108.55x = 232,797,241,275.21
  5. Step 5: Solve for x
    x = 232,797,241,275.21/551,108.55
  6. Step 6: Final answer
    x = 422,416.31

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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.