Home / 346,708.62-478,315.41-210,720.66

Finding the Fourth Proportional to 346,708.62, 478,315.41 and 210,720.66

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Solution

The fourth proportional to 346,708.62, 478,315.41 and 210,720.66 is: 290,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,708.62 : 478,315.41 = 210,720.66 : x
  2. Step 2: Convert to fraction form
    346,708.62/478,315.41 = 210,720.66/x
  3. Step 3: Cross multiply
    346,708.62x = 478,315.41 × 210,720.66
  4. Step 4: Simplify right side
    346,708.62x = 100,790,938,883.37
  5. Step 5: Solve for x
    x = 100,790,938,883.37/346,708.62
  6. Step 6: Final answer
    x = 290,707.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.