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Finding the Fourth Proportional to 312,539.14, 431,295.14 and 183,475.55

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Solution

The fourth proportional to 312,539.14, 431,295.14 and 183,475.55 is: 253,191.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,539.14 : 431,295.14 = 183,475.55 : x
  2. Step 2: Convert to fraction form
    312,539.14/431,295.14 = 183,475.55/x
  3. Step 3: Cross multiply
    312,539.14x = 431,295.14 × 183,475.55
  4. Step 4: Simplify right side
    312,539.14x = 79,132,112,106.45
  5. Step 5: Solve for x
    x = 79,132,112,106.45/312,539.14
  6. Step 6: Final answer
    x = 253,191.05

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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.