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Finding the Fourth Proportional to 440,358.30, 660,075.69 and 215,408.22

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Solution

The fourth proportional to 440,358.30, 660,075.69 and 215,408.22 is: 322,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,358.30 : 660,075.69 = 215,408.22 : x
  2. Step 2: Convert to fraction form
    440,358.30/660,075.69 = 215,408.22/x
  3. Step 3: Cross multiply
    440,358.30x = 660,075.69 × 215,408.22
  4. Step 4: Simplify right side
    440,358.30x = 142,185,729,448.17
  5. Step 5: Solve for x
    x = 142,185,729,448.17/440,358.30
  6. Step 6: Final answer
    x = 322,886.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.