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Finding the Fourth Proportional to 418,627.56, 577,503 and 248,741.40

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Solution

The fourth proportional to 418,627.56, 577,503 and 248,741.40 is: 343,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,627.56 : 577,503 = 248,741.40 : x
  2. Step 2: Convert to fraction form
    418,627.56/577,503 = 248,741.40/x
  3. Step 3: Cross multiply
    418,627.56x = 577,503 × 248,741.40
  4. Step 4: Simplify right side
    418,627.56x = 143,648,904,724.20
  5. Step 5: Solve for x
    x = 143,648,904,724.20/418,627.56
  6. Step 6: Final answer
    x = 343,142.49

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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.