Home / 210,545,917.20-315,839,980.35-72,353,323.80

Finding the Fourth Proportional to 210,545,917.20, 315,839,980.35 and 72,353,323.80

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Solution

The fourth proportional to 210,545,917.20, 315,839,980.35 and 72,353,323.80 is: 108,537,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,545,917.20 : 315,839,980.35 = 72,353,323.80 : x
  2. Step 2: Convert to fraction form
    210,545,917.20/315,839,980.35 = 72,353,323.80/x
  3. Step 3: Cross multiply
    210,545,917.20x = 315,839,980.35 × 72,353,323.80
  4. Step 4: Simplify right side
    210,545,917.20x = 22,852,072,367,249,188
  5. Step 5: Solve for x
    x = 22,852,072,367,249,188/210,545,917.20
  6. Step 6: Final answer
    x = 108,537,238.20

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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.