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Finding the Fourth Proportional to 385,324.30, 577,238.64 and 283,938.40

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Solution

The fourth proportional to 385,324.30, 577,238.64 and 283,938.40 is: 425,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,324.30 : 577,238.64 = 283,938.40 : x
  2. Step 2: Convert to fraction form
    385,324.30/577,238.64 = 283,938.40/x
  3. Step 3: Cross multiply
    385,324.30x = 577,238.64 × 283,938.40
  4. Step 4: Simplify right side
    385,324.30x = 163,900,215,859.78
  5. Step 5: Solve for x
    x = 163,900,215,859.78/385,324.30
  6. Step 6: Final answer
    x = 425,356.55

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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.