Home / 388,837.16-536,595.30-209,989.16

Finding the Fourth Proportional to 388,837.16, 536,595.30 and 209,989.16

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Solution

The fourth proportional to 388,837.16, 536,595.30 and 209,989.16 is: 289,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,837.16 : 536,595.30 = 209,989.16 : x
  2. Step 2: Convert to fraction form
    388,837.16/536,595.30 = 209,989.16/x
  3. Step 3: Cross multiply
    388,837.16x = 536,595.30 × 209,989.16
  4. Step 4: Simplify right side
    388,837.16x = 112,679,193,623.97
  5. Step 5: Solve for x
    x = 112,679,193,623.97/388,837.16
  6. Step 6: Final answer
    x = 289,785.05

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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.