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Finding the Fourth Proportional to 289,440.74, 399,623.27 and 180,710.79

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Solution

The fourth proportional to 289,440.74, 399,623.27 and 180,710.79 is: 249,502.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,440.74 : 399,623.27 = 180,710.79 : x
  2. Step 2: Convert to fraction form
    289,440.74/399,623.27 = 180,710.79/x
  3. Step 3: Cross multiply
    289,440.74x = 399,623.27 × 180,710.79
  4. Step 4: Simplify right side
    289,440.74x = 72,216,235,920.53
  5. Step 5: Solve for x
    x = 72,216,235,920.53/289,440.74
  6. Step 6: Final answer
    x = 249,502.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.