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Finding the Fourth Proportional to 530,661.06, 732,302.78 and 288,939.24

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Solution

The fourth proportional to 530,661.06, 732,302.78 and 288,939.24 is: 398,730.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,661.06 : 732,302.78 = 288,939.24 : x
  2. Step 2: Convert to fraction form
    530,661.06/732,302.78 = 288,939.24/x
  3. Step 3: Cross multiply
    530,661.06x = 732,302.78 × 288,939.24
  4. Step 4: Simplify right side
    530,661.06x = 211,591,007,258.39
  5. Step 5: Solve for x
    x = 211,591,007,258.39/530,661.06
  6. Step 6: Final answer
    x = 398,730.99

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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.