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Finding the Fourth Proportional to 478,419.21, 660,226.95 and 263,557.80

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Solution

The fourth proportional to 478,419.21, 660,226.95 and 263,557.80 is: 363,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,419.21 : 660,226.95 = 263,557.80 : x
  2. Step 2: Convert to fraction form
    478,419.21/660,226.95 = 263,557.80/x
  3. Step 3: Cross multiply
    478,419.21x = 660,226.95 × 263,557.80
  4. Step 4: Simplify right side
    478,419.21x = 174,007,962,442.71
  5. Step 5: Solve for x
    x = 174,007,962,442.71/478,419.21
  6. Step 6: Final answer
    x = 363,714.41

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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.