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Finding the Fourth Proportional to 415,495.42, 573,427.76 and 243,557.87

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Solution

The fourth proportional to 415,495.42, 573,427.76 and 243,557.87 is: 336,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,495.42 : 573,427.76 = 243,557.87 : x
  2. Step 2: Convert to fraction form
    415,495.42/573,427.76 = 243,557.87/x
  3. Step 3: Cross multiply
    415,495.42x = 573,427.76 × 243,557.87
  4. Step 4: Simplify right side
    415,495.42x = 139,662,839,739.54
  5. Step 5: Solve for x
    x = 139,662,839,739.54/415,495.42
  6. Step 6: Final answer
    x = 336,135.69

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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.