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Finding the Fourth Proportional to 388,873.13, 536,645.12 and 210,025.13

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Solution

The fourth proportional to 388,873.13, 536,645.12 and 210,025.13 is: 289,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,873.13 : 536,645.12 = 210,025.13 : x
  2. Step 2: Convert to fraction form
    388,873.13/536,645.12 = 210,025.13/x
  3. Step 3: Cross multiply
    388,873.13x = 536,645.12 × 210,025.13
  4. Step 4: Simplify right side
    388,873.13x = 112,708,957,358.51
  5. Step 5: Solve for x
    x = 112,708,957,358.51/388,873.13
  6. Step 6: Final answer
    x = 289,834.78

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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.