Home / 210,545,914.20-315,839,975.85-72,353,320.80

Finding the Fourth Proportional to 210,545,914.20, 315,839,975.85 and 72,353,320.80

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Solution

The fourth proportional to 210,545,914.20, 315,839,975.85 and 72,353,320.80 is: 108,537,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,545,914.20 : 315,839,975.85 = 72,353,320.80 : x
  2. Step 2: Convert to fraction form
    210,545,914.20/315,839,975.85 = 72,353,320.80/x
  3. Step 3: Cross multiply
    210,545,914.20x = 315,839,975.85 × 72,353,320.80
  4. Step 4: Simplify right side
    210,545,914.20x = 22,852,071,094,139,304
  5. Step 5: Solve for x
    x = 22,852,071,094,139,304/210,545,914.20
  6. Step 6: Final answer
    x = 108,537,233.70

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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.