Home / 385,988,350.80-532,668,038.50-209,776,358.92

Finding the Fourth Proportional to 385,988,350.80, 532,668,038.50 and 209,776,358.92

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Solution

The fourth proportional to 385,988,350.80, 532,668,038.50 and 209,776,358.92 is: 289,493,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,988,350.80 : 532,668,038.50 = 209,776,358.92 : x
  2. Step 2: Convert to fraction form
    385,988,350.80/532,668,038.50 = 209,776,358.92/x
  3. Step 3: Cross multiply
    385,988,350.80x = 532,668,038.50 × 209,776,358.92
  4. Step 4: Simplify right side
    385,988,350.80x = 111,741,161,629,588,368
  5. Step 5: Solve for x
    x = 111,741,161,629,588,368/385,988,350.80
  6. Step 6: Final answer
    x = 289,493,611.40

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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.