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Finding the Fourth Proportional to 612,601.28, 918,919.20 and 169,369.28

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Solution

The fourth proportional to 612,601.28, 918,919.20 and 169,369.28 is: 254,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,601.28 : 918,919.20 = 169,369.28 : x
  2. Step 2: Convert to fraction form
    612,601.28/918,919.20 = 169,369.28/x
  3. Step 3: Cross multiply
    612,601.28x = 918,919.20 × 169,369.28
  4. Step 4: Simplify right side
    612,601.28x = 155,636,683,282.18
  5. Step 5: Solve for x
    x = 155,636,683,282.18/612,601.28
  6. Step 6: Final answer
    x = 254,058.70

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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.