Home / 346,705.62-478,311.28-210,717.66

Finding the Fourth Proportional to 346,705.62, 478,311.28 and 210,717.66

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Solution

The fourth proportional to 346,705.62, 478,311.28 and 210,717.66 is: 290,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,705.62 : 478,311.28 = 210,717.66 : x
  2. Step 2: Convert to fraction form
    346,705.62/478,311.28 = 210,717.66/x
  3. Step 3: Cross multiply
    346,705.62x = 478,311.28 × 210,717.66
  4. Step 4: Simplify right side
    346,705.62x = 100,788,632,619.62
  5. Step 5: Solve for x
    x = 100,788,632,619.62/346,705.62
  6. Step 6: Final answer
    x = 290,703.78

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1.5x scale

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.