Home / 385,367.04-577,931.04-135,990.72

Finding the Fourth Proportional to 385,367.04, 577,931.04 and 135,990.72

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Solution

The fourth proportional to 385,367.04, 577,931.04 and 135,990.72 is: 203,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,367.04 : 577,931.04 = 135,990.72 : x
  2. Step 2: Convert to fraction form
    385,367.04/577,931.04 = 135,990.72/x
  3. Step 3: Cross multiply
    385,367.04x = 577,931.04 × 135,990.72
  4. Step 4: Simplify right side
    385,367.04x = 78,593,258,239.95
  5. Step 5: Solve for x
    x = 78,593,258,239.95/385,367.04
  6. Step 6: Final answer
    x = 203,943.90

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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.