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Finding the Fourth Proportional to 372,111.40, 558,167.10 and 266,703.40

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Solution

The fourth proportional to 372,111.40, 558,167.10 and 266,703.40 is: 400,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,111.40 : 558,167.10 = 266,703.40 : x
  2. Step 2: Convert to fraction form
    372,111.40/558,167.10 = 266,703.40/x
  3. Step 3: Cross multiply
    372,111.40x = 558,167.10 × 266,703.40
  4. Step 4: Simplify right side
    372,111.40x = 148,865,063,338.14
  5. Step 5: Solve for x
    x = 148,865,063,338.14/372,111.40
  6. Step 6: Final answer
    x = 400,055.10

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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.