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Finding the Fourth Proportional to 389,616.40, 584,443.80 and 202,992.40

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Solution

The fourth proportional to 389,616.40, 584,443.80 and 202,992.40 is: 304,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,616.40 : 584,443.80 = 202,992.40 : x
  2. Step 2: Convert to fraction form
    389,616.40/584,443.80 = 202,992.40/x
  3. Step 3: Cross multiply
    389,616.40x = 584,443.80 × 202,992.40
  4. Step 4: Simplify right side
    389,616.40x = 118,637,649,627.12
  5. Step 5: Solve for x
    x = 118,637,649,627.12/389,616.40
  6. Step 6: Final answer
    x = 304,498.60

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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.