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Finding the Fourth Proportional to 346,447.50, 478,098.99 and 187,471.50

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Solution

The fourth proportional to 346,447.50, 478,098.99 and 187,471.50 is: 258,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,447.50 : 478,098.99 = 187,471.50 : x
  2. Step 2: Convert to fraction form
    346,447.50/478,098.99 = 187,471.50/x
  3. Step 3: Cross multiply
    346,447.50x = 478,098.99 × 187,471.50
  4. Step 4: Simplify right side
    346,447.50x = 89,629,934,803.79
  5. Step 5: Solve for x
    x = 89,629,934,803.79/346,447.50
  6. Step 6: Final answer
    x = 258,711.45

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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.