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Finding the Fourth Proportional to 418,118.59, 577,087.68 and 248,319.91

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Solution

The fourth proportional to 418,118.59, 577,087.68 and 248,319.91 is: 342,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,118.59 : 577,087.68 = 248,319.91 : x
  2. Step 2: Convert to fraction form
    418,118.59/577,087.68 = 248,319.91/x
  3. Step 3: Cross multiply
    418,118.59x = 577,087.68 × 248,319.91
  4. Step 4: Simplify right side
    418,118.59x = 143,302,360,759.71
  5. Step 5: Solve for x
    x = 143,302,360,759.71/418,118.59
  6. Step 6: Final answer
    x = 342,731.38

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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.