Home / 390,218.10-585,327.15-203,205.30

Finding the Fourth Proportional to 390,218.10, 585,327.15 and 203,205.30

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Solution

The fourth proportional to 390,218.10, 585,327.15 and 203,205.30 is: 304,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,218.10 : 585,327.15 = 203,205.30 : x
  2. Step 2: Convert to fraction form
    390,218.10/585,327.15 = 203,205.30/x
  3. Step 3: Cross multiply
    390,218.10x = 585,327.15 × 203,205.30
  4. Step 4: Simplify right side
    390,218.10x = 118,941,579,113.90
  5. Step 5: Solve for x
    x = 118,941,579,113.90/390,218.10
  6. Step 6: Final answer
    x = 304,807.95

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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.