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Finding the Fourth Proportional to 522,138.80, 783,208.20 and 167,164.40

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Solution

The fourth proportional to 522,138.80, 783,208.20 and 167,164.40 is: 250,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,138.80 : 783,208.20 = 167,164.40 : x
  2. Step 2: Convert to fraction form
    522,138.80/783,208.20 = 167,164.40/x
  3. Step 3: Cross multiply
    522,138.80x = 783,208.20 × 167,164.40
  4. Step 4: Simplify right side
    522,138.80x = 130,924,528,828.08
  5. Step 5: Solve for x
    x = 130,924,528,828.08/522,138.80
  6. Step 6: Final answer
    x = 250,746.60

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Double scale
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Similar ratio
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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.