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Finding the Fourth Proportional to 660,248.56, 990,438.47 and 239,557.24

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Solution

The fourth proportional to 660,248.56, 990,438.47 and 239,557.24 is: 359,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,248.56 : 990,438.47 = 239,557.24 : x
  2. Step 2: Convert to fraction form
    660,248.56/990,438.47 = 239,557.24/x
  3. Step 3: Cross multiply
    660,248.56x = 990,438.47 × 239,557.24
  4. Step 4: Simplify right side
    660,248.56x = 237,266,700,113.04
  5. Step 5: Solve for x
    x = 237,266,700,113.04/660,248.56
  6. Step 6: Final answer
    x = 359,359.67

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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.