Home / 390,106.22-585,328.37-137,567.15

Finding the Fourth Proportional to 390,106.22, 585,328.37 and 137,567.15

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Solution

The fourth proportional to 390,106.22, 585,328.37 and 137,567.15 is: 206,410.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,106.22 : 585,328.37 = 137,567.15 : x
  2. Step 2: Convert to fraction form
    390,106.22/585,328.37 = 137,567.15/x
  3. Step 3: Cross multiply
    390,106.22x = 585,328.37 × 137,567.15
  4. Step 4: Simplify right side
    390,106.22x = 80,521,955,675.05
  5. Step 5: Solve for x
    x = 80,521,955,675.05/390,106.22
  6. Step 6: Final answer
    x = 206,410.34

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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.