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Finding the Fourth Proportional to 612,420.28, 918,647.70 and 169,188.28

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Solution

The fourth proportional to 612,420.28, 918,647.70 and 169,188.28 is: 253,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,420.28 : 918,647.70 = 169,188.28 : x
  2. Step 2: Convert to fraction form
    612,420.28/918,647.70 = 169,188.28/x
  3. Step 3: Cross multiply
    612,420.28x = 918,647.70 × 169,188.28
  4. Step 4: Simplify right side
    612,420.28x = 155,424,424,288.96
  5. Step 5: Solve for x
    x = 155,424,424,288.96/612,420.28
  6. Step 6: Final answer
    x = 253,787.19

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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.