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Finding the Fourth Proportional to 382,637.40, 573,956.10 and 145,987.80

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Solution

The fourth proportional to 382,637.40, 573,956.10 and 145,987.80 is: 218,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,637.40 : 573,956.10 = 145,987.80 : x
  2. Step 2: Convert to fraction form
    382,637.40/573,956.10 = 145,987.80/x
  3. Step 3: Cross multiply
    382,637.40x = 573,956.10 × 145,987.80
  4. Step 4: Simplify right side
    382,637.40x = 83,790,588,335.58
  5. Step 5: Solve for x
    x = 83,790,588,335.58/382,637.40
  6. Step 6: Final answer
    x = 218,981.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.