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Finding the Fourth Proportional to 478,723.84, 660,630.70 and 263,883.89

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Solution

The fourth proportional to 478,723.84, 660,630.70 and 263,883.89 is: 364,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,723.84 : 660,630.70 = 263,883.89 : x
  2. Step 2: Convert to fraction form
    478,723.84/660,630.70 = 263,883.89/x
  3. Step 3: Cross multiply
    478,723.84x = 660,630.70 × 263,883.89
  4. Step 4: Simplify right side
    478,723.84x = 174,329,798,969.42
  5. Step 5: Solve for x
    x = 174,329,798,969.42/478,723.84
  6. Step 6: Final answer
    x = 364,155.25

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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.