Home / 378,955.02-522,957.42-209,188.74

Finding the Fourth Proportional to 378,955.02, 522,957.42 and 209,188.74

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Solution

The fourth proportional to 378,955.02, 522,957.42 and 209,188.74 is: 288,680.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,955.02 : 522,957.42 = 209,188.74 : x
  2. Step 2: Convert to fraction form
    378,955.02/522,957.42 = 209,188.74/x
  3. Step 3: Cross multiply
    378,955.02x = 522,957.42 × 209,188.74
  4. Step 4: Simplify right side
    378,955.02x = 109,396,803,763.45
  5. Step 5: Solve for x
    x = 109,396,803,763.45/378,955.02
  6. Step 6: Final answer
    x = 288,680.18

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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.