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Finding the Fourth Proportional to 612,086.60, 918,128.55 and 162,807.55

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Solution

The fourth proportional to 612,086.60, 918,128.55 and 162,807.55 is: 244,210.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,086.60 : 918,128.55 = 162,807.55 : x
  2. Step 2: Convert to fraction form
    612,086.60/918,128.55 = 162,807.55/x
  3. Step 3: Cross multiply
    612,086.60x = 918,128.55 × 162,807.55
  4. Step 4: Simplify right side
    612,086.60x = 149,478,259,810.55
  5. Step 5: Solve for x
    x = 149,478,259,810.55/612,086.60
  6. Step 6: Final answer
    x = 244,210.97

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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.