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Finding the Fourth Proportional to 472,900.51, 709,343.24 and 220,039.57

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Solution

The fourth proportional to 472,900.51, 709,343.24 and 220,039.57 is: 330,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,900.51 : 709,343.24 = 220,039.57 : x
  2. Step 2: Convert to fraction form
    472,900.51/709,343.24 = 220,039.57/x
  3. Step 3: Cross multiply
    472,900.51x = 709,343.24 × 220,039.57
  4. Step 4: Simplify right side
    472,900.51x = 156,083,578,638.45
  5. Step 5: Solve for x
    x = 156,083,578,638.45/472,900.51
  6. Step 6: Final answer
    x = 330,055.85

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1.5x scale

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.