Home / 400,839.40-553,158.51-219,554.36

Finding the Fourth Proportional to 400,839.40, 553,158.51 and 219,554.36

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Solution

The fourth proportional to 400,839.40, 553,158.51 and 219,554.36 is: 302,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,839.40 : 553,158.51 = 219,554.36 : x
  2. Step 2: Convert to fraction form
    400,839.40/553,158.51 = 219,554.36/x
  3. Step 3: Cross multiply
    400,839.40x = 553,158.51 × 219,554.36
  4. Step 4: Simplify right side
    400,839.40x = 121,448,364,855.84
  5. Step 5: Solve for x
    x = 121,448,364,855.84/400,839.40
  6. Step 6: Final answer
    x = 302,985.10

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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.