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Finding the Fourth Proportional to 815,230.40, 1,223,018.40 and 246,564.80

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Solution

The fourth proportional to 815,230.40, 1,223,018.40 and 246,564.80 is: 369,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,230.40 : 1,223,018.40 = 246,564.80 : x
  2. Step 2: Convert to fraction form
    815,230.40/1,223,018.40 = 246,564.80/x
  3. Step 3: Cross multiply
    815,230.40x = 1,223,018.40 × 246,564.80
  4. Step 4: Simplify right side
    815,230.40x = 301,553,287,192.32
  5. Step 5: Solve for x
    x = 301,553,287,192.32/815,230.40
  6. Step 6: Final answer
    x = 369,899.46

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1.5x scale

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.