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Finding the Fourth Proportional to 612,572.13, 918,901.98 and 163,290.69

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Solution

The fourth proportional to 612,572.13, 918,901.98 and 163,290.69 is: 244,947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,572.13 : 918,901.98 = 163,290.69 : x
  2. Step 2: Convert to fraction form
    612,572.13/918,901.98 = 163,290.69/x
  3. Step 3: Cross multiply
    612,572.13x = 918,901.98 × 163,290.69
  4. Step 4: Simplify right side
    612,572.13x = 150,048,138,356.57
  5. Step 5: Solve for x
    x = 150,048,138,356.57/612,572.13
  6. Step 6: Final answer
    x = 244,947.71

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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.