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Finding the Fourth Proportional to 280,803.36, 387,385.32 and 167,560.56

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Solution

The fourth proportional to 280,803.36, 387,385.32 and 167,560.56 is: 231,159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,803.36 : 387,385.32 = 167,560.56 : x
  2. Step 2: Convert to fraction form
    280,803.36/387,385.32 = 167,560.56/x
  3. Step 3: Cross multiply
    280,803.36x = 387,385.32 × 167,560.56
  4. Step 4: Simplify right side
    280,803.36x = 64,910,501,154.98
  5. Step 5: Solve for x
    x = 64,910,501,154.98/280,803.36
  6. Step 6: Final answer
    x = 231,159.99

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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.