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Finding the Fourth Proportional to 315,246.64, 435,036.78 and 172,003.60

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Solution

The fourth proportional to 315,246.64, 435,036.78 and 172,003.60 is: 237,363.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,246.64 : 435,036.78 = 172,003.60 : x
  2. Step 2: Convert to fraction form
    315,246.64/435,036.78 = 172,003.60/x
  3. Step 3: Cross multiply
    315,246.64x = 435,036.78 × 172,003.60
  4. Step 4: Simplify right side
    315,246.64x = 74,827,892,292.41
  5. Step 5: Solve for x
    x = 74,827,892,292.41/315,246.64
  6. Step 6: Final answer
    x = 237,363.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.