Home / 209,479.90-289,031.87-123,442.40

Finding the Fourth Proportional to 209,479.90, 289,031.87 and 123,442.40

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Solution

The fourth proportional to 209,479.90, 289,031.87 and 123,442.40 is: 170,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,479.90 : 289,031.87 = 123,442.40 : x
  2. Step 2: Convert to fraction form
    209,479.90/289,031.87 = 123,442.40/x
  3. Step 3: Cross multiply
    209,479.90x = 289,031.87 × 123,442.40
  4. Step 4: Simplify right side
    209,479.90x = 35,678,788,277.56
  5. Step 5: Solve for x
    x = 35,678,788,277.56/209,479.90
  6. Step 6: Final answer
    x = 170,320.82

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1.5x scale

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.