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Finding the Fourth Proportional to 383,125, 528,197.16 and 268,249.12

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Solution

The fourth proportional to 383,125, 528,197.16 and 268,249.12 is: 369,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,125 : 528,197.16 = 268,249.12 : x
  2. Step 2: Convert to fraction form
    383,125/528,197.16 = 268,249.12/x
  3. Step 3: Cross multiply
    383,125x = 528,197.16 × 268,249.12
  4. Step 4: Simplify right side
    383,125x = 141,688,423,356.50
  5. Step 5: Solve for x
    x = 141,688,423,356.50/383,125
  6. Step 6: Final answer
    x = 369,822.96

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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.