Home / 553,940.68-831,051.20-154,581.40

Finding the Fourth Proportional to 553,940.68, 831,051.20 and 154,581.40

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Solution

The fourth proportional to 553,940.68, 831,051.20 and 154,581.40 is: 231,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,940.68 : 831,051.20 = 154,581.40 : x
  2. Step 2: Convert to fraction form
    553,940.68/831,051.20 = 154,581.40/x
  3. Step 3: Cross multiply
    553,940.68x = 831,051.20 × 154,581.40
  4. Step 4: Simplify right side
    553,940.68x = 128,465,057,967.68
  5. Step 5: Solve for x
    x = 128,465,057,967.68/553,940.68
  6. Step 6: Final answer
    x = 231,911.22

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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.