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Finding the Fourth Proportional to 346,487.50, 478,152.75 and 187,511.50

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Solution

The fourth proportional to 346,487.50, 478,152.75 and 187,511.50 is: 258,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,487.50 : 478,152.75 = 187,511.50 : x
  2. Step 2: Convert to fraction form
    346,487.50/478,152.75 = 187,511.50/x
  3. Step 3: Cross multiply
    346,487.50x = 478,152.75 × 187,511.50
  4. Step 4: Simplify right side
    346,487.50x = 89,659,139,381.63
  5. Step 5: Solve for x
    x = 89,659,139,381.63/346,487.50
  6. Step 6: Final answer
    x = 258,765.87

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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.