Home / 385,976.32-532,637.76-216,209.28

Finding the Fourth Proportional to 385,976.32, 532,637.76 and 216,209.28

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Solution

The fourth proportional to 385,976.32, 532,637.76 and 216,209.28 is: 298,363.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,976.32 : 532,637.76 = 216,209.28 : x
  2. Step 2: Convert to fraction form
    385,976.32/532,637.76 = 216,209.28/x
  3. Step 3: Cross multiply
    385,976.32x = 532,637.76 × 216,209.28
  4. Step 4: Simplify right side
    385,976.32x = 115,161,226,590.41
  5. Step 5: Solve for x
    x = 115,161,226,590.41/385,976.32
  6. Step 6: Final answer
    x = 298,363.45

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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.