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Finding the Fourth Proportional to 509,345.80, 764,172.30 and 272,801.80

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Solution

The fourth proportional to 509,345.80, 764,172.30 and 272,801.80 is: 409,284.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,345.80 : 764,172.30 = 272,801.80 : x
  2. Step 2: Convert to fraction form
    509,345.80/764,172.30 = 272,801.80/x
  3. Step 3: Cross multiply
    509,345.80x = 764,172.30 × 272,801.80
  4. Step 4: Simplify right side
    509,345.80x = 208,467,578,950.14
  5. Step 5: Solve for x
    x = 208,467,578,950.14/509,345.80
  6. Step 6: Final answer
    x = 409,284.97

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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.