Home / 388,890.40-583,465.20-189,335.20

Finding the Fourth Proportional to 388,890.40, 583,465.20 and 189,335.20

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Solution

The fourth proportional to 388,890.40, 583,465.20 and 189,335.20 is: 284,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,890.40 : 583,465.20 = 189,335.20 : x
  2. Step 2: Convert to fraction form
    388,890.40/583,465.20 = 189,335.20/x
  3. Step 3: Cross multiply
    388,890.40x = 583,465.20 × 189,335.20
  4. Step 4: Simplify right side
    388,890.40x = 110,470,500,335.04
  5. Step 5: Solve for x
    x = 110,470,500,335.04/388,890.40
  6. Step 6: Final answer
    x = 284,065.90

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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.