Home / 548,929.20-823,393.80-211,985.40

Finding the Fourth Proportional to 548,929.20, 823,393.80 and 211,985.40

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Solution

The fourth proportional to 548,929.20, 823,393.80 and 211,985.40 is: 317,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,929.20 : 823,393.80 = 211,985.40 : x
  2. Step 2: Convert to fraction form
    548,929.20/823,393.80 = 211,985.40/x
  3. Step 3: Cross multiply
    548,929.20x = 823,393.80 × 211,985.40
  4. Step 4: Simplify right side
    548,929.20x = 174,547,464,050.52
  5. Step 5: Solve for x
    x = 174,547,464,050.52/548,929.20
  6. Step 6: Final answer
    x = 317,978.10

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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.