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Finding the Fourth Proportional to 346,808.59, 478,743.01 and 210,885.73

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Solution

The fourth proportional to 346,808.59, 478,743.01 and 210,885.73 is: 291,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,808.59 : 478,743.01 = 210,885.73 : x
  2. Step 2: Convert to fraction form
    346,808.59/478,743.01 = 210,885.73/x
  3. Step 3: Cross multiply
    346,808.59x = 478,743.01 × 210,885.73
  4. Step 4: Simplify right side
    346,808.59x = 100,960,067,422.18
  5. Step 5: Solve for x
    x = 100,960,067,422.18/346,808.59
  6. Step 6: Final answer
    x = 291,111.79

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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.