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Finding the Fourth Proportional to 385,748.48, 532,395.98 and 230,689.64

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Solution

The fourth proportional to 385,748.48, 532,395.98 and 230,689.64 is: 318,389.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,748.48 : 532,395.98 = 230,689.64 : x
  2. Step 2: Convert to fraction form
    385,748.48/532,395.98 = 230,689.64/x
  3. Step 3: Cross multiply
    385,748.48x = 532,395.98 × 230,689.64
  4. Step 4: Simplify right side
    385,748.48x = 122,818,233,148.22
  5. Step 5: Solve for x
    x = 122,818,233,148.22/385,748.48
  6. Step 6: Final answer
    x = 318,389.42

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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.