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Finding the Fourth Proportional to 478,772.58, 660,707.91 and 260,980.14

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Solution

The fourth proportional to 478,772.58, 660,707.91 and 260,980.14 is: 360,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,772.58 : 660,707.91 = 260,980.14 : x
  2. Step 2: Convert to fraction form
    478,772.58/660,707.91 = 260,980.14/x
  3. Step 3: Cross multiply
    478,772.58x = 660,707.91 × 260,980.14
  4. Step 4: Simplify right side
    478,772.58x = 172,431,642,850.91
  5. Step 5: Solve for x
    x = 172,431,642,850.91/478,772.58
  6. Step 6: Final answer
    x = 360,153.55

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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.