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Finding the Fourth Proportional to 545,065.44, 752,015.28 and 330,136.80

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Solution

The fourth proportional to 545,065.44, 752,015.28 and 330,136.80 is: 455,482.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,065.44 : 752,015.28 = 330,136.80 : x
  2. Step 2: Convert to fraction form
    545,065.44/752,015.28 = 330,136.80/x
  3. Step 3: Cross multiply
    545,065.44x = 752,015.28 × 330,136.80
  4. Step 4: Simplify right side
    545,065.44x = 248,267,918,090.30
  5. Step 5: Solve for x
    x = 248,267,918,090.30/545,065.44
  6. Step 6: Final answer
    x = 455,482.77

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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.