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Finding the Fourth Proportional to 312,572.83, 431,350.08 and 169,333.45

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Solution

The fourth proportional to 312,572.83, 431,350.08 and 169,333.45 is: 233,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,572.83 : 431,350.08 = 169,333.45 : x
  2. Step 2: Convert to fraction form
    312,572.83/431,350.08 = 169,333.45/x
  3. Step 3: Cross multiply
    312,572.83x = 431,350.08 × 169,333.45
  4. Step 4: Simplify right side
    312,572.83x = 73,041,997,204.18
  5. Step 5: Solve for x
    x = 73,041,997,204.18/312,572.83
  6. Step 6: Final answer
    x = 233,679.93

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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.