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Finding the Fourth Proportional to 250,666.84, 345,918.36 and 137,488.78

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Solution

The fourth proportional to 250,666.84, 345,918.36 and 137,488.78 is: 189,733.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,666.84 : 345,918.36 = 137,488.78 : x
  2. Step 2: Convert to fraction form
    250,666.84/345,918.36 = 137,488.78/x
  3. Step 3: Cross multiply
    250,666.84x = 345,918.36 × 137,488.78
  4. Step 4: Simplify right side
    250,666.84x = 47,559,893,296.00
  5. Step 5: Solve for x
    x = 47,559,893,296.00/250,666.84
  6. Step 6: Final answer
    x = 189,733.49

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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.