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Finding the Fourth Proportional to 478,258.56, 660,026.64 and 263,398.56

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Solution

The fourth proportional to 478,258.56, 660,026.64 and 263,398.56 is: 363,506.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,258.56 : 660,026.64 = 263,398.56 : x
  2. Step 2: Convert to fraction form
    478,258.56/660,026.64 = 263,398.56/x
  3. Step 3: Cross multiply
    478,258.56x = 660,026.64 × 263,398.56
  4. Step 4: Simplify right side
    478,258.56x = 173,850,066,537.64
  5. Step 5: Solve for x
    x = 173,850,066,537.64/478,258.56
  6. Step 6: Final answer
    x = 363,506.44

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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.