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Finding the Fourth Proportional to 438,164.78, 604,695.40 and 247,108.46

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Solution

The fourth proportional to 438,164.78, 604,695.40 and 247,108.46 is: 341,025.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,164.78 : 604,695.40 = 247,108.46 : x
  2. Step 2: Convert to fraction form
    438,164.78/604,695.40 = 247,108.46/x
  3. Step 3: Cross multiply
    438,164.78x = 604,695.40 × 247,108.46
  4. Step 4: Simplify right side
    438,164.78x = 149,425,349,063.08
  5. Step 5: Solve for x
    x = 149,425,349,063.08/438,164.78
  6. Step 6: Final answer
    x = 341,025.47

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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.