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Finding the Fourth Proportional to 292,313.72, 438,482.78 and 92,629.69

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Solution

The fourth proportional to 292,313.72, 438,482.78 and 92,629.69 is: 138,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,313.72 : 438,482.78 = 92,629.69 : x
  2. Step 2: Convert to fraction form
    292,313.72/438,482.78 = 92,629.69/x
  3. Step 3: Cross multiply
    292,313.72x = 438,482.78 × 92,629.69
  4. Step 4: Simplify right side
    292,313.72x = 40,616,522,769.74
  5. Step 5: Solve for x
    x = 40,616,522,769.74/292,313.72
  6. Step 6: Final answer
    x = 138,948.40

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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.