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Finding the Fourth Proportional to 385,000.43, 577,599.05 and 148,279.55

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Solution

The fourth proportional to 385,000.43, 577,599.05 and 148,279.55 is: 222,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,000.43 : 577,599.05 = 148,279.55 : x
  2. Step 2: Convert to fraction form
    385,000.43/577,599.05 = 148,279.55/x
  3. Step 3: Cross multiply
    385,000.43x = 577,599.05 × 148,279.55
  4. Step 4: Simplify right side
    385,000.43x = 85,646,124,697.13
  5. Step 5: Solve for x
    x = 85,646,124,697.13/385,000.43
  6. Step 6: Final answer
    x = 222,457.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.