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Finding the Fourth Proportional to 346,860.38, 478,744.49 and 210,865.50

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Solution

The fourth proportional to 346,860.38, 478,744.49 and 210,865.50 is: 291,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,860.38 : 478,744.49 = 210,865.50 : x
  2. Step 2: Convert to fraction form
    346,860.38/478,744.49 = 210,865.50/x
  3. Step 3: Cross multiply
    346,860.38x = 478,744.49 × 210,865.50
  4. Step 4: Simplify right side
    346,860.38x = 100,950,696,783.26
  5. Step 5: Solve for x
    x = 100,950,696,783.26/346,860.38
  6. Step 6: Final answer
    x = 291,041.30

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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.