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Finding the Fourth Proportional to 289,488.94, 399,379.80 and 180,529.18

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Solution

The fourth proportional to 289,488.94, 399,379.80 and 180,529.18 is: 249,058.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,488.94 : 399,379.80 = 180,529.18 : x
  2. Step 2: Convert to fraction form
    289,488.94/399,379.80 = 180,529.18/x
  3. Step 3: Cross multiply
    289,488.94x = 399,379.80 × 180,529.18
  4. Step 4: Simplify right side
    289,488.94x = 72,099,707,802.56
  5. Step 5: Solve for x
    x = 72,099,707,802.56/289,488.94
  6. Step 6: Final answer
    x = 249,058.59

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1.5x scale

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.