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Finding the Fourth Proportional to 328,037.80, 490,259.20 and 239,477.80

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Solution

The fourth proportional to 328,037.80, 490,259.20 and 239,477.80 is: 357,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,037.80 : 490,259.20 = 239,477.80 : x
  2. Step 2: Convert to fraction form
    328,037.80/490,259.20 = 239,477.80/x
  3. Step 3: Cross multiply
    328,037.80x = 490,259.20 × 239,477.80
  4. Step 4: Simplify right side
    328,037.80x = 117,406,194,645.76
  5. Step 5: Solve for x
    x = 117,406,194,645.76/328,037.80
  6. Step 6: Final answer
    x = 357,904.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.