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Finding the Fourth Proportional to 478,838.50, 660,802.22 and 263,986.26

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Solution

The fourth proportional to 478,838.50, 660,802.22 and 263,986.26 is: 364,303.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,838.50 : 660,802.22 = 263,986.26 : x
  2. Step 2: Convert to fraction form
    478,838.50/660,802.22 = 263,986.26/x
  3. Step 3: Cross multiply
    478,838.50x = 660,802.22 × 263,986.26
  4. Step 4: Simplify right side
    478,838.50x = 174,442,703,849.51
  5. Step 5: Solve for x
    x = 174,442,703,849.51/478,838.50
  6. Step 6: Final answer
    x = 364,303.84

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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.