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Finding the Fourth Proportional to 346,857.86, 478,741.06 and 210,863

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Solution

The fourth proportional to 346,857.86, 478,741.06 and 210,863 is: 291,037.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,857.86 : 478,741.06 = 210,863 : x
  2. Step 2: Convert to fraction form
    346,857.86/478,741.06 = 210,863/x
  3. Step 3: Cross multiply
    346,857.86x = 478,741.06 × 210,863
  4. Step 4: Simplify right side
    346,857.86x = 100,948,776,134.78
  5. Step 5: Solve for x
    x = 100,948,776,134.78/346,857.86
  6. Step 6: Final answer
    x = 291,037.88

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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.