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Finding the Fourth Proportional to 220,710.65, 304,590.70 and 130,070.43

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Solution

The fourth proportional to 220,710.65, 304,590.70 and 130,070.43 is: 179,503.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,710.65 : 304,590.70 = 130,070.43 : x
  2. Step 2: Convert to fraction form
    220,710.65/304,590.70 = 130,070.43/x
  3. Step 3: Cross multiply
    220,710.65x = 304,590.70 × 130,070.43
  4. Step 4: Simplify right side
    220,710.65x = 39,618,243,485.59
  5. Step 5: Solve for x
    x = 39,618,243,485.59/220,710.65
  6. Step 6: Final answer
    x = 179,503.09

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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.