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Finding the Fourth Proportional to 478,465.10, 660,377.46 and 274,653.81

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Solution

The fourth proportional to 478,465.10, 660,377.46 and 274,653.81 is: 379,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,465.10 : 660,377.46 = 274,653.81 : x
  2. Step 2: Convert to fraction form
    478,465.10/660,377.46 = 274,653.81/x
  3. Step 3: Cross multiply
    478,465.10x = 660,377.46 × 274,653.81
  4. Step 4: Simplify right side
    478,465.10x = 181,375,185,427.12
  5. Step 5: Solve for x
    x = 181,375,185,427.12/478,465.10
  6. Step 6: Final answer
    x = 379,077.15

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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.