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Finding the Fourth Proportional to 312,276.57, 430,941.31 and 169,036.57

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Solution

The fourth proportional to 312,276.57, 430,941.31 and 169,036.57 is: 233,270.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,276.57 : 430,941.31 = 169,036.57 : x
  2. Step 2: Convert to fraction form
    312,276.57/430,941.31 = 169,036.57/x
  3. Step 3: Cross multiply
    312,276.57x = 430,941.31 × 169,036.57
  4. Step 4: Simplify right side
    312,276.57x = 72,844,841,980.62
  5. Step 5: Solve for x
    x = 72,844,841,980.62/312,276.57
  6. Step 6: Final answer
    x = 233,270.28

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1.5x scale

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.