Home / 389,768.81-537,881.00-220,013.87

Finding the Fourth Proportional to 389,768.81, 537,881.00 and 220,013.87

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Solution

The fourth proportional to 389,768.81, 537,881.00 and 220,013.87 is: 303,619.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,768.81 : 537,881.00 = 220,013.87 : x
  2. Step 2: Convert to fraction form
    389,768.81/537,881.00 = 220,013.87/x
  3. Step 3: Cross multiply
    389,768.81x = 537,881.00 × 220,013.87
  4. Step 4: Simplify right side
    389,768.81x = 118,341,280,654.10
  5. Step 5: Solve for x
    x = 118,341,280,654.10/389,768.81
  6. Step 6: Final answer
    x = 303,619.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.