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Finding the Fourth Proportional to 284,074.04, 392,021.72 and 156,749.54

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Solution

The fourth proportional to 284,074.04, 392,021.72 and 156,749.54 is: 216,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,074.04 : 392,021.72 = 156,749.54 : x
  2. Step 2: Convert to fraction form
    284,074.04/392,021.72 = 156,749.54/x
  3. Step 3: Cross multiply
    284,074.04x = 392,021.72 × 156,749.54
  4. Step 4: Simplify right side
    284,074.04x = 61,449,224,280.01
  5. Step 5: Solve for x
    x = 61,449,224,280.01/284,074.04
  6. Step 6: Final answer
    x = 216,314.11

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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.