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Finding the Fourth Proportional to 518,133.77, 777,200.65 and 307,663.37

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Solution

The fourth proportional to 518,133.77, 777,200.65 and 307,663.37 is: 461,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,133.77 : 777,200.65 = 307,663.37 : x
  2. Step 2: Convert to fraction form
    518,133.77/777,200.65 = 307,663.37/x
  3. Step 3: Cross multiply
    518,133.77x = 777,200.65 × 307,663.37
  4. Step 4: Simplify right side
    518,133.77x = 239,116,167,259.19
  5. Step 5: Solve for x
    x = 239,116,167,259.19/518,133.77
  6. Step 6: Final answer
    x = 461,495.05

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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.