Home / 210,507,868.08-315,783,459.54-79,460,526.78

Finding the Fourth Proportional to 210,507,868.08, 315,783,459.54 and 79,460,526.78

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Solution

The fourth proportional to 210,507,868.08, 315,783,459.54 and 79,460,526.78 is: 119,198,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,507,868.08 : 315,783,459.54 = 79,460,526.78 : x
  2. Step 2: Convert to fraction form
    210,507,868.08/315,783,459.54 = 79,460,526.78/x
  3. Step 3: Cross multiply
    210,507,868.08x = 315,783,459.54 × 79,460,526.78
  4. Step 4: Simplify right side
    210,507,868.08x = 25,092,320,043,459,220
  5. Step 5: Solve for x
    x = 25,092,320,043,459,220/210,507,868.08
  6. Step 6: Final answer
    x = 119,198,965.21

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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.