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Finding the Fourth Proportional to 292,040.28, 438,060.78 and 70,424.28

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Solution

The fourth proportional to 292,040.28, 438,060.78 and 70,424.28 is: 105,636.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,040.28 : 438,060.78 = 70,424.28 : x
  2. Step 2: Convert to fraction form
    292,040.28/438,060.78 = 70,424.28/x
  3. Step 3: Cross multiply
    292,040.28x = 438,060.78 × 70,424.28
  4. Step 4: Simplify right side
    292,040.28x = 30,850,115,027.74
  5. Step 5: Solve for x
    x = 30,850,115,027.74/292,040.28
  6. Step 6: Final answer
    x = 105,636.51

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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.