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Finding the Fourth Proportional to 292,354.73, 438,532.11 and 70,738.73

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Solution

The fourth proportional to 292,354.73, 438,532.11 and 70,738.73 is: 106,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,354.73 : 438,532.11 = 70,738.73 : x
  2. Step 2: Convert to fraction form
    292,354.73/438,532.11 = 70,738.73/x
  3. Step 3: Cross multiply
    292,354.73x = 438,532.11 × 70,738.73
  4. Step 4: Simplify right side
    292,354.73x = 31,021,206,444.20
  5. Step 5: Solve for x
    x = 31,021,206,444.20/292,354.73
  6. Step 6: Final answer
    x = 106,108.10

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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.