Home / 280,857.50-387,583.38-153,534.02

Finding the Fourth Proportional to 280,857.50, 387,583.38 and 153,534.02

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Solution

The fourth proportional to 280,857.50, 387,583.38 and 153,534.02 is: 211,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,857.50 : 387,583.38 = 153,534.02 : x
  2. Step 2: Convert to fraction form
    280,857.50/387,583.38 = 153,534.02/x
  3. Step 3: Cross multiply
    280,857.50x = 387,583.38 × 153,534.02
  4. Step 4: Simplify right side
    280,857.50x = 59,507,234,416.59
  5. Step 5: Solve for x
    x = 59,507,234,416.59/280,857.50
  6. Step 6: Final answer
    x = 211,876.96

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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.