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Finding the Fourth Proportional to 478,698.15, 660,600.18 and 263,838.36

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Solution

The fourth proportional to 478,698.15, 660,600.18 and 263,838.36 is: 364,095.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,698.15 : 660,600.18 = 263,838.36 : x
  2. Step 2: Convert to fraction form
    478,698.15/660,600.18 = 263,838.36/x
  3. Step 3: Cross multiply
    478,698.15x = 660,600.18 × 263,838.36
  4. Step 4: Simplify right side
    478,698.15x = 174,291,668,106.91
  5. Step 5: Solve for x
    x = 174,291,668,106.91/478,698.15
  6. Step 6: Final answer
    x = 364,095.14

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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.