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Finding the Fourth Proportional to 387,016.30, 579,540.30 and 369,301.60

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Solution

The fourth proportional to 387,016.30, 579,540.30 and 369,301.60 is: 553,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,016.30 : 579,540.30 = 369,301.60 : x
  2. Step 2: Convert to fraction form
    387,016.30/579,540.30 = 369,301.60/x
  3. Step 3: Cross multiply
    387,016.30x = 579,540.30 × 369,301.60
  4. Step 4: Simplify right side
    387,016.30x = 214,025,160,054.48
  5. Step 5: Solve for x
    x = 214,025,160,054.48/387,016.30
  6. Step 6: Final answer
    x = 553,013.30

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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.