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Finding the Fourth Proportional to 218,064.36, 300,884.72 and 127,402.82

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Solution

The fourth proportional to 218,064.36, 300,884.72 and 127,402.82 is: 175,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,064.36 : 300,884.72 = 127,402.82 : x
  2. Step 2: Convert to fraction form
    218,064.36/300,884.72 = 127,402.82/x
  3. Step 3: Cross multiply
    218,064.36x = 300,884.72 × 127,402.82
  4. Step 4: Simplify right side
    218,064.36x = 38,333,559,681.47
  5. Step 5: Solve for x
    x = 38,333,559,681.47/218,064.36
  6. Step 6: Final answer
    x = 175,790.12

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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.