Home / 400,965.58-553,131.95-239,778.21

Finding the Fourth Proportional to 400,965.58, 553,131.95 and 239,778.21

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Solution

The fourth proportional to 400,965.58, 553,131.95 and 239,778.21 is: 330,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,965.58 : 553,131.95 = 239,778.21 : x
  2. Step 2: Convert to fraction form
    400,965.58/553,131.95 = 239,778.21/x
  3. Step 3: Cross multiply
    400,965.58x = 553,131.95 × 239,778.21
  4. Step 4: Simplify right side
    400,965.58x = 132,628,988,864.81
  5. Step 5: Solve for x
    x = 132,628,988,864.81/400,965.58
  6. Step 6: Final answer
    x = 330,774.00

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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.