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Finding the Fourth Proportional to 418,207.65, 577,107.75 and 236,915.88

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Solution

The fourth proportional to 418,207.65, 577,107.75 and 236,915.88 is: 326,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,207.65 : 577,107.75 = 236,915.88 : x
  2. Step 2: Convert to fraction form
    418,207.65/577,107.75 = 236,915.88/x
  3. Step 3: Cross multiply
    418,207.65x = 577,107.75 × 236,915.88
  4. Step 4: Simplify right side
    418,207.65x = 136,725,990,446.07
  5. Step 5: Solve for x
    x = 136,725,990,446.07/418,207.65
  6. Step 6: Final answer
    x = 326,933.26

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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.