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Finding the Fourth Proportional to 358,888.20, 537,668.10 and 209,200.20

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Solution

The fourth proportional to 358,888.20, 537,668.10 and 209,200.20 is: 313,413.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,888.20 : 537,668.10 = 209,200.20 : x
  2. Step 2: Convert to fraction form
    358,888.20/537,668.10 = 209,200.20/x
  3. Step 3: Cross multiply
    358,888.20x = 537,668.10 × 209,200.20
  4. Step 4: Simplify right side
    358,888.20x = 112,480,274,053.62
  5. Step 5: Solve for x
    x = 112,480,274,053.62/358,888.20
  6. Step 6: Final answer
    x = 313,413.13

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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.