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Finding the Fourth Proportional to 240,686.40, 360,640.80 and 151,780.80

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Solution

The fourth proportional to 240,686.40, 360,640.80 and 151,780.80 is: 227,426.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,686.40 : 360,640.80 = 151,780.80 : x
  2. Step 2: Convert to fraction form
    240,686.40/360,640.80 = 151,780.80/x
  3. Step 3: Cross multiply
    240,686.40x = 360,640.80 × 151,780.80
  4. Step 4: Simplify right side
    240,686.40x = 54,738,349,136.64
  5. Step 5: Solve for x
    x = 54,738,349,136.64/240,686.40
  6. Step 6: Final answer
    x = 227,426.02

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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.