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Finding the Fourth Proportional to 528,080.40, 792,120.60 and 173,130.30

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Solution

The fourth proportional to 528,080.40, 792,120.60 and 173,130.30 is: 259,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,080.40 : 792,120.60 = 173,130.30 : x
  2. Step 2: Convert to fraction form
    528,080.40/792,120.60 = 173,130.30/x
  3. Step 3: Cross multiply
    528,080.40x = 792,120.60 × 173,130.30
  4. Step 4: Simplify right side
    528,080.40x = 137,140,077,114.18
  5. Step 5: Solve for x
    x = 137,140,077,114.18/528,080.40
  6. Step 6: Final answer
    x = 259,695.45

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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.