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Finding the Fourth Proportional to 515,486.86, 773,341.51 and 155,627.85

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Solution

The fourth proportional to 515,486.86, 773,341.51 and 155,627.85 is: 233,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,486.86 : 773,341.51 = 155,627.85 : x
  2. Step 2: Convert to fraction form
    515,486.86/773,341.51 = 155,627.85/x
  3. Step 3: Cross multiply
    515,486.86x = 773,341.51 × 155,627.85
  4. Step 4: Simplify right side
    515,486.86x = 120,353,476,127.98
  5. Step 5: Solve for x
    x = 120,353,476,127.98/515,486.86
  6. Step 6: Final answer
    x = 233,475.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.