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Finding the Fourth Proportional to 385,068.80, 577,603.20 and 324,243.20

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Solution

The fourth proportional to 385,068.80, 577,603.20 and 324,243.20 is: 486,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,068.80 : 577,603.20 = 324,243.20 : x
  2. Step 2: Convert to fraction form
    385,068.80/577,603.20 = 324,243.20/x
  3. Step 3: Cross multiply
    385,068.80x = 577,603.20 × 324,243.20
  4. Step 4: Simplify right side
    385,068.80x = 187,283,909,898.24
  5. Step 5: Solve for x
    x = 187,283,909,898.24/385,068.80
  6. Step 6: Final answer
    x = 486,364.80

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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.