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Finding the Fourth Proportional to 266,139.80, 399,501.30 and 166,412.60

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Solution

The fourth proportional to 266,139.80, 399,501.30 and 166,412.60 is: 249,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,139.80 : 399,501.30 = 166,412.60 : x
  2. Step 2: Convert to fraction form
    266,139.80/399,501.30 = 166,412.60/x
  3. Step 3: Cross multiply
    266,139.80x = 399,501.30 × 166,412.60
  4. Step 4: Simplify right side
    266,139.80x = 66,482,050,036.38
  5. Step 5: Solve for x
    x = 66,482,050,036.38/266,139.80
  6. Step 6: Final answer
    x = 249,801.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.