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Finding the Fourth Proportional to 478,258.05, 660,025.95 and 263,398.06

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Solution

The fourth proportional to 478,258.05, 660,025.95 and 263,398.06 is: 363,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,258.05 : 660,025.95 = 263,398.06 : x
  2. Step 2: Convert to fraction form
    478,258.05/660,025.95 = 263,398.06/x
  3. Step 3: Cross multiply
    478,258.05x = 660,025.95 × 263,398.06
  4. Step 4: Simplify right side
    478,258.05x = 173,849,554,779.66
  5. Step 5: Solve for x
    x = 173,849,554,779.66/478,258.05
  6. Step 6: Final answer
    x = 363,505.76

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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.