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Finding the Fourth Proportional to 509,362.55, 764,035.97 and 130,279.93

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Solution

The fourth proportional to 509,362.55, 764,035.97 and 130,279.93 is: 195,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,362.55 : 764,035.97 = 130,279.93 : x
  2. Step 2: Convert to fraction form
    509,362.55/764,035.97 = 130,279.93/x
  3. Step 3: Cross multiply
    509,362.55x = 764,035.97 × 130,279.93
  4. Step 4: Simplify right side
    509,362.55x = 99,538,553,717.28
  5. Step 5: Solve for x
    x = 99,538,553,717.28/509,362.55
  6. Step 6: Final answer
    x = 195,417.89

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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.