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Finding the Fourth Proportional to 610,122.40, 915,356.40 and 189,440.80

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Solution

The fourth proportional to 610,122.40, 915,356.40 and 189,440.80 is: 284,214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,122.40 : 915,356.40 = 189,440.80 : x
  2. Step 2: Convert to fraction form
    610,122.40/915,356.40 = 189,440.80/x
  3. Step 3: Cross multiply
    610,122.40x = 915,356.40 × 189,440.80
  4. Step 4: Simplify right side
    610,122.40x = 173,405,848,701.12
  5. Step 5: Solve for x
    x = 173,405,848,701.12/610,122.40
  6. Step 6: Final answer
    x = 284,214.85

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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.