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Finding the Fourth Proportional to 478,938.94, 660,965.70 and 264,078.70

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Solution

The fourth proportional to 478,938.94, 660,965.70 and 264,078.70 is: 364,445.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,938.94 : 660,965.70 = 264,078.70 : x
  2. Step 2: Convert to fraction form
    478,938.94/660,965.70 = 264,078.70/x
  3. Step 3: Cross multiply
    478,938.94x = 660,965.70 × 264,078.70
  4. Step 4: Simplify right side
    478,938.94x = 174,546,962,800.59
  5. Step 5: Solve for x
    x = 174,546,962,800.59/478,938.94
  6. Step 6: Final answer
    x = 364,445.13

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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.