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Finding the Fourth Proportional to 291,573, 402,374.79 and 162,507.90

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Solution

The fourth proportional to 291,573, 402,374.79 and 162,507.90 is: 224,263.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,573 : 402,374.79 = 162,507.90 : x
  2. Step 2: Convert to fraction form
    291,573/402,374.79 = 162,507.90/x
  3. Step 3: Cross multiply
    291,573x = 402,374.79 × 162,507.90
  4. Step 4: Simplify right side
    291,573x = 65,389,083,644.75
  5. Step 5: Solve for x
    x = 65,389,083,644.75/291,573
  6. Step 6: Final answer
    x = 224,263.16

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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.