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Finding the Fourth Proportional to 312,705.42, 431,533.85 and 169,465.46

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Solution

The fourth proportional to 312,705.42, 431,533.85 and 169,465.46 is: 233,862.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,705.42 : 431,533.85 = 169,465.46 : x
  2. Step 2: Convert to fraction form
    312,705.42/431,533.85 = 169,465.46/x
  3. Step 3: Cross multiply
    312,705.42x = 431,533.85 × 169,465.46
  4. Step 4: Simplify right side
    312,705.42x = 73,130,079,390.82
  5. Step 5: Solve for x
    x = 73,130,079,390.82/312,705.42
  6. Step 6: Final answer
    x = 233,862.53

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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.