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Finding the Fourth Proportional to 509,672.35, 764,510.96 and 154,689.45

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Solution

The fourth proportional to 509,672.35, 764,510.96 and 154,689.45 is: 232,034.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,672.35 : 764,510.96 = 154,689.45 : x
  2. Step 2: Convert to fraction form
    509,672.35/764,510.96 = 154,689.45/x
  3. Step 3: Cross multiply
    509,672.35x = 764,510.96 × 154,689.45
  4. Step 4: Simplify right side
    509,672.35x = 118,261,779,921.37
  5. Step 5: Solve for x
    x = 118,261,779,921.37/509,672.35
  6. Step 6: Final answer
    x = 232,034.91

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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.