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Finding the Fourth Proportional to 612,147.50, 918,223.38 and 185,687.00

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Solution

The fourth proportional to 612,147.50, 918,223.38 and 185,687.00 is: 278,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,147.50 : 918,223.38 = 185,687.00 : x
  2. Step 2: Convert to fraction form
    612,147.50/918,223.38 = 185,687.00/x
  3. Step 3: Cross multiply
    612,147.50x = 918,223.38 × 185,687.00
  4. Step 4: Simplify right side
    612,147.50x = 170,502,144,528.20
  5. Step 5: Solve for x
    x = 170,502,144,528.20/612,147.50
  6. Step 6: Final answer
    x = 278,531.15

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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.