Home / 389,296.65-583,588.20-136,439.31

Finding the Fourth Proportional to 389,296.65, 583,588.20 and 136,439.31

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Solution

The fourth proportional to 389,296.65, 583,588.20 and 136,439.31 is: 204,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,296.65 : 583,588.20 = 136,439.31 : x
  2. Step 2: Convert to fraction form
    389,296.65/583,588.20 = 136,439.31/x
  3. Step 3: Cross multiply
    389,296.65x = 583,588.20 × 136,439.31
  4. Step 4: Simplify right side
    389,296.65x = 79,624,371,332.14
  5. Step 5: Solve for x
    x = 79,624,371,332.14/389,296.65
  6. Step 6: Final answer
    x = 204,533.92

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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.