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Finding the Fourth Proportional to 478,721.84, 660,627.95 and 263,881.89

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Solution

The fourth proportional to 478,721.84, 660,627.95 and 263,881.89 is: 364,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,721.84 : 660,627.95 = 263,881.89 : x
  2. Step 2: Convert to fraction form
    478,721.84/660,627.95 = 263,881.89/x
  3. Step 3: Cross multiply
    478,721.84x = 660,627.95 × 263,881.89
  4. Step 4: Simplify right side
    478,721.84x = 174,327,750,713.42
  5. Step 5: Solve for x
    x = 174,327,750,713.42/478,721.84
  6. Step 6: Final answer
    x = 364,152.50

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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.