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Finding the Fourth Proportional to 545,728.82, 753,128.46 and 304,011.32

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Solution

The fourth proportional to 545,728.82, 753,128.46 and 304,011.32 is: 419,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,728.82 : 753,128.46 = 304,011.32 : x
  2. Step 2: Convert to fraction form
    545,728.82/753,128.46 = 304,011.32/x
  3. Step 3: Cross multiply
    545,728.82x = 753,128.46 × 304,011.32
  4. Step 4: Simplify right side
    545,728.82x = 228,959,577,254.17
  5. Step 5: Solve for x
    x = 228,959,577,254.17/545,728.82
  6. Step 6: Final answer
    x = 419,548.26

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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.