Home / 389,875.06-537,966.93-220,105.54

Finding the Fourth Proportional to 389,875.06, 537,966.93 and 220,105.54

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Solution

The fourth proportional to 389,875.06, 537,966.93 and 220,105.54 is: 303,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,875.06 : 537,966.93 = 220,105.54 : x
  2. Step 2: Convert to fraction form
    389,875.06/537,966.93 = 220,105.54/x
  3. Step 3: Cross multiply
    389,875.06x = 537,966.93 × 220,105.54
  4. Step 4: Simplify right side
    389,875.06x = 118,409,501,629.79
  5. Step 5: Solve for x
    x = 118,409,501,629.79/389,875.06
  6. Step 6: Final answer
    x = 303,711.40

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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.