Home / 220,307.45-304,017.30-129,642.53

Finding the Fourth Proportional to 220,307.45, 304,017.30 and 129,642.53

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Solution

The fourth proportional to 220,307.45, 304,017.30 and 129,642.53 is: 178,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,307.45 : 304,017.30 = 129,642.53 : x
  2. Step 2: Convert to fraction form
    220,307.45/304,017.30 = 129,642.53/x
  3. Step 3: Cross multiply
    220,307.45x = 304,017.30 × 129,642.53
  4. Step 4: Simplify right side
    220,307.45x = 39,413,570,415.68
  5. Step 5: Solve for x
    x = 39,413,570,415.68/220,307.45
  6. Step 6: Final answer
    x = 178,902.58

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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.