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Finding the Fourth Proportional to 346,394.82, 478,015.56 and 193,428.76

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Solution

The fourth proportional to 346,394.82, 478,015.56 and 193,428.76 is: 266,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,394.82 : 478,015.56 = 193,428.76 : x
  2. Step 2: Convert to fraction form
    346,394.82/478,015.56 = 193,428.76/x
  3. Step 3: Cross multiply
    346,394.82x = 478,015.56 × 193,428.76
  4. Step 4: Simplify right side
    346,394.82x = 92,461,957,031.51
  5. Step 5: Solve for x
    x = 92,461,957,031.51/346,394.82
  6. Step 6: Final answer
    x = 266,926.50

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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.