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Finding the Fourth Proportional to 415,836.32, 573,861.60 and 243,878.32

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Solution

The fourth proportional to 415,836.32, 573,861.60 and 243,878.32 is: 336,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,836.32 : 573,861.60 = 243,878.32 : x
  2. Step 2: Convert to fraction form
    415,836.32/573,861.60 = 243,878.32/x
  3. Step 3: Cross multiply
    415,836.32x = 573,861.60 × 243,878.32
  4. Step 4: Simplify right side
    415,836.32x = 139,952,402,920.51
  5. Step 5: Solve for x
    x = 139,952,402,920.51/415,836.32
  6. Step 6: Final answer
    x = 336,556.47

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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.