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Finding the Fourth Proportional to 415,685.50, 573,839.10 and 243,579.58

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Solution

The fourth proportional to 415,685.50, 573,839.10 and 243,579.58 is: 336,252.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,685.50 : 573,839.10 = 243,579.58 : x
  2. Step 2: Convert to fraction form
    415,685.50/573,839.10 = 243,579.58/x
  3. Step 3: Cross multiply
    415,685.50x = 573,839.10 × 243,579.58
  4. Step 4: Simplify right side
    415,685.50x = 139,775,486,965.58
  5. Step 5: Solve for x
    x = 139,775,486,965.58/415,685.50
  6. Step 6: Final answer
    x = 336,252.98

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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.