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Finding the Fourth Proportional to 646,275.16, 969,560.16 and 197,036.20

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Solution

The fourth proportional to 646,275.16, 969,560.16 and 197,036.20 is: 295,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,275.16 : 969,560.16 = 197,036.20 : x
  2. Step 2: Convert to fraction form
    646,275.16/969,560.16 = 197,036.20/x
  3. Step 3: Cross multiply
    646,275.16x = 969,560.16 × 197,036.20
  4. Step 4: Simplify right side
    646,275.16x = 191,038,449,597.79
  5. Step 5: Solve for x
    x = 191,038,449,597.79/646,275.16
  6. Step 6: Final answer
    x = 295,599.25

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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.