Home / 280,723.24-387,399.07-153,398.83

Finding the Fourth Proportional to 280,723.24, 387,399.07 and 153,398.83

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Solution

The fourth proportional to 280,723.24, 387,399.07 and 153,398.83 is: 211,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,723.24 : 387,399.07 = 153,398.83 : x
  2. Step 2: Convert to fraction form
    280,723.24/387,399.07 = 153,398.83/x
  3. Step 3: Cross multiply
    280,723.24x = 387,399.07 × 153,398.83
  4. Step 4: Simplify right side
    280,723.24x = 59,426,564,560.46
  5. Step 5: Solve for x
    x = 59,426,564,560.46/280,723.24
  6. Step 6: Final answer
    x = 211,690.94

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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.