Home / 390,503.55-585,848.78-137,840.76

Finding the Fourth Proportional to 390,503.55, 585,848.78 and 137,840.76

Calculator

Solution

The fourth proportional to 390,503.55, 585,848.78 and 137,840.76 is: 206,794.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,503.55 : 585,848.78 = 137,840.76 : x
  2. Step 2: Convert to fraction form
    390,503.55/585,848.78 = 137,840.76/x
  3. Step 3: Cross multiply
    390,503.55x = 585,848.78 × 137,840.76
  4. Step 4: Simplify right side
    390,503.55x = 80,753,841,080.27
  5. Step 5: Solve for x
    x = 80,753,841,080.27/390,503.55
  6. Step 6: Final answer
    x = 206,794.13

Related Problems

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.