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Finding the Fourth Proportional to 346,394.95, 478,015.72 and 193,428.88

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Solution

The fourth proportional to 346,394.95, 478,015.72 and 193,428.88 is: 266,926.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,394.95 : 478,015.72 = 193,428.88 : x
  2. Step 2: Convert to fraction form
    346,394.95/478,015.72 = 193,428.88/x
  3. Step 3: Cross multiply
    346,394.95x = 478,015.72 × 193,428.88
  4. Step 4: Simplify right side
    346,394.95x = 92,462,044,858.42
  5. Step 5: Solve for x
    x = 92,462,044,858.42/346,394.95
  6. Step 6: Final answer
    x = 266,926.65

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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.