Home / 210,142,003.70-315,213,005.55-207,272,222.30

Finding the Fourth Proportional to 210,142,003.70, 315,213,005.55 and 207,272,222.30

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Solution

The fourth proportional to 210,142,003.70, 315,213,005.55 and 207,272,222.30 is: 310,908,333.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,142,003.70 : 315,213,005.55 = 207,272,222.30 : x
  2. Step 2: Convert to fraction form
    210,142,003.70/315,213,005.55 = 207,272,222.30/x
  3. Step 3: Cross multiply
    210,142,003.70x = 315,213,005.55 × 207,272,222.30
  4. Step 4: Simplify right side
    210,142,003.70x = 65,334,900,158,210,736
  5. Step 5: Solve for x
    x = 65,334,900,158,210,736/210,142,003.70
  6. Step 6: Final answer
    x = 310,908,333.45

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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.