Home / 385,441,706.61-531,910,230.02-209,229,821.64

Finding the Fourth Proportional to 385,441,706.61, 531,910,230.02 and 209,229,821.64

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Solution

The fourth proportional to 385,441,706.61, 531,910,230.02 and 209,229,821.64 is: 288,737,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,706.61 : 531,910,230.02 = 209,229,821.64 : x
  2. Step 2: Convert to fraction form
    385,441,706.61/531,910,230.02 = 209,229,821.64/x
  3. Step 3: Cross multiply
    385,441,706.61x = 531,910,230.02 × 209,229,821.64
  4. Step 4: Simplify right side
    385,441,706.61x = 111,291,482,554,529,808
  5. Step 5: Solve for x
    x = 111,291,482,554,529,808/385,441,706.61
  6. Step 6: Final answer
    x = 288,737,520.22

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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.