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Finding the Fourth Proportional to 577,121.73, 865,215.64 and 240,415.32

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Solution

The fourth proportional to 577,121.73, 865,215.64 and 240,415.32 is: 360,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,121.73 : 865,215.64 = 240,415.32 : x
  2. Step 2: Convert to fraction form
    577,121.73/865,215.64 = 240,415.32/x
  3. Step 3: Cross multiply
    577,121.73x = 865,215.64 × 240,415.32
  4. Step 4: Simplify right side
    577,121.73x = 208,011,091,711.56
  5. Step 5: Solve for x
    x = 208,011,091,711.56/577,121.73
  6. Step 6: Final answer
    x = 360,428.45

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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.