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Finding the Fourth Proportional to 478,180.88, 717,270.20 and 145,756.88

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Solution

The fourth proportional to 478,180.88, 717,270.20 and 145,756.88 is: 218,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,180.88 : 717,270.20 = 145,756.88 : x
  2. Step 2: Convert to fraction form
    478,180.88/717,270.20 = 145,756.88/x
  3. Step 3: Cross multiply
    478,180.88x = 717,270.20 × 145,756.88
  4. Step 4: Simplify right side
    478,180.88x = 104,547,066,468.98
  5. Step 5: Solve for x
    x = 104,547,066,468.98/478,180.88
  6. Step 6: Final answer
    x = 218,634.98

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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.