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Finding the Fourth Proportional to 368,005.20, 552,007.80 and 315,517.20

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Solution

The fourth proportional to 368,005.20, 552,007.80 and 315,517.20 is: 473,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,005.20 : 552,007.80 = 315,517.20 : x
  2. Step 2: Convert to fraction form
    368,005.20/552,007.80 = 315,517.20/x
  3. Step 3: Cross multiply
    368,005.20x = 552,007.80 × 315,517.20
  4. Step 4: Simplify right side
    368,005.20x = 174,167,955,434.16
  5. Step 5: Solve for x
    x = 174,167,955,434.16/368,005.20
  6. Step 6: Final answer
    x = 473,275.80

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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.