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Finding the Fourth Proportional to 478,772.46, 660,705.81 and 263,916.12

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Solution

The fourth proportional to 478,772.46, 660,705.81 and 263,916.12 is: 364,204.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,772.46 : 660,705.81 = 263,916.12 : x
  2. Step 2: Convert to fraction form
    478,772.46/660,705.81 = 263,916.12/x
  3. Step 3: Cross multiply
    478,772.46x = 660,705.81 × 263,916.12
  4. Step 4: Simplify right side
    478,772.46x = 174,370,913,836.66
  5. Step 5: Solve for x
    x = 174,370,913,836.66/478,772.46
  6. Step 6: Final answer
    x = 364,204.14

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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.