Home / 385,730.46-532,302.09-215,970.66

Finding the Fourth Proportional to 385,730.46, 532,302.09 and 215,970.66

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Solution

The fourth proportional to 385,730.46, 532,302.09 and 215,970.66 is: 298,036.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,730.46 : 532,302.09 = 215,970.66 : x
  2. Step 2: Convert to fraction form
    385,730.46/532,302.09 = 215,970.66/x
  3. Step 3: Cross multiply
    385,730.46x = 532,302.09 × 215,970.66
  4. Step 4: Simplify right side
    385,730.46x = 114,961,633,696.68
  5. Step 5: Solve for x
    x = 114,961,633,696.68/385,730.46
  6. Step 6: Final answer
    x = 298,036.18

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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.