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Finding the Fourth Proportional to 220,681.95, 304,531.88 and 125,206.64

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Solution

The fourth proportional to 220,681.95, 304,531.88 and 125,206.64 is: 172,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,681.95 : 304,531.88 = 125,206.64 : x
  2. Step 2: Convert to fraction form
    220,681.95/304,531.88 = 125,206.64/x
  3. Step 3: Cross multiply
    220,681.95x = 304,531.88 × 125,206.64
  4. Step 4: Simplify right side
    220,681.95x = 38,129,412,841.65
  5. Step 5: Solve for x
    x = 38,129,412,841.65/220,681.95
  6. Step 6: Final answer
    x = 172,779.93

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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.