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Finding the Fourth Proportional to 346,495.50, 478,163.79 and 187,519.50

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Solution

The fourth proportional to 346,495.50, 478,163.79 and 187,519.50 is: 258,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,495.50 : 478,163.79 = 187,519.50 : x
  2. Step 2: Convert to fraction form
    346,495.50/478,163.79 = 187,519.50/x
  3. Step 3: Cross multiply
    346,495.50x = 478,163.79 × 187,519.50
  4. Step 4: Simplify right side
    346,495.50x = 89,665,034,818.91
  5. Step 5: Solve for x
    x = 89,665,034,818.91/346,495.50
  6. Step 6: Final answer
    x = 258,776.91

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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.