Home / 388,989.12-583,582.08-108,506.16

Finding the Fourth Proportional to 388,989.12, 583,582.08 and 108,506.16

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Solution

The fourth proportional to 388,989.12, 583,582.08 and 108,506.16 is: 162,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,989.12 : 583,582.08 = 108,506.16 : x
  2. Step 2: Convert to fraction form
    388,989.12/583,582.08 = 108,506.16/x
  3. Step 3: Cross multiply
    388,989.12x = 583,582.08 × 108,506.16
  4. Step 4: Simplify right side
    388,989.12x = 63,322,250,545.61
  5. Step 5: Solve for x
    x = 63,322,250,545.61/388,989.12
  6. Step 6: Final answer
    x = 162,786.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.