Home / 220,985.55-304,945.70-130,320.74

Finding the Fourth Proportional to 220,985.55, 304,945.70 and 130,320.74

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Solution

The fourth proportional to 220,985.55, 304,945.70 and 130,320.74 is: 179,834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,985.55 : 304,945.70 = 130,320.74 : x
  2. Step 2: Convert to fraction form
    220,985.55/304,945.70 = 130,320.74/x
  3. Step 3: Cross multiply
    220,985.55x = 304,945.70 × 130,320.74
  4. Step 4: Simplify right side
    220,985.55x = 39,740,749,283.82
  5. Step 5: Solve for x
    x = 39,740,749,283.82/220,985.55
  6. Step 6: Final answer
    x = 179,834.15

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1.5x scale

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.