Home / 400,913.28-601,439.40-134,699.76

Finding the Fourth Proportional to 400,913.28, 601,439.40 and 134,699.76

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Solution

The fourth proportional to 400,913.28, 601,439.40 and 134,699.76 is: 202,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,913.28 : 601,439.40 = 134,699.76 : x
  2. Step 2: Convert to fraction form
    400,913.28/601,439.40 = 134,699.76/x
  3. Step 3: Cross multiply
    400,913.28x = 601,439.40 × 134,699.76
  4. Step 4: Simplify right side
    400,913.28x = 81,013,742,834.54
  5. Step 5: Solve for x
    x = 81,013,742,834.54/400,913.28
  6. Step 6: Final answer
    x = 202,072.98

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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.