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Finding the Fourth Proportional to 368,004.80, 552,007.20 and 115,306.40

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Solution

The fourth proportional to 368,004.80, 552,007.20 and 115,306.40 is: 172,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,004.80 : 552,007.20 = 115,306.40 : x
  2. Step 2: Convert to fraction form
    368,004.80/552,007.20 = 115,306.40/x
  3. Step 3: Cross multiply
    368,004.80x = 552,007.20 × 115,306.40
  4. Step 4: Simplify right side
    368,004.80x = 63,649,963,006.08
  5. Step 5: Solve for x
    x = 63,649,963,006.08/368,004.80
  6. Step 6: Final answer
    x = 172,959.60

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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.