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Finding the Fourth Proportional to 415,480.78, 573,407.54 and 243,543.19

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Solution

The fourth proportional to 415,480.78, 573,407.54 and 243,543.19 is: 336,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,480.78 : 573,407.54 = 243,543.19 : x
  2. Step 2: Convert to fraction form
    415,480.78/573,407.54 = 243,543.19/x
  3. Step 3: Cross multiply
    415,480.78x = 573,407.54 × 243,543.19
  4. Step 4: Simplify right side
    415,480.78x = 139,649,500,798.84
  5. Step 5: Solve for x
    x = 139,649,500,798.84/415,480.78
  6. Step 6: Final answer
    x = 336,115.43

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Double scale
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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.