Home / 280,800.24-387,490.96-153,475.94

Finding the Fourth Proportional to 280,800.24, 387,490.96 and 153,475.94

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Solution

The fourth proportional to 280,800.24, 387,490.96 and 153,475.94 is: 211,789.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,800.24 : 387,490.96 = 153,475.94 : x
  2. Step 2: Convert to fraction form
    280,800.24/387,490.96 = 153,475.94/x
  3. Step 3: Cross multiply
    280,800.24x = 387,490.96 × 153,475.94
  4. Step 4: Simplify right side
    280,800.24x = 59,470,539,327.50
  5. Step 5: Solve for x
    x = 59,470,539,327.50/280,800.24
  6. Step 6: Final answer
    x = 211,789.49

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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.