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Finding the Fourth Proportional to 384,182.48, 529,678.95 and 315,017.12

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Solution

The fourth proportional to 384,182.48, 529,678.95 and 315,017.12 is: 434,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,182.48 : 529,678.95 = 315,017.12 : x
  2. Step 2: Convert to fraction form
    384,182.48/529,678.95 = 315,017.12/x
  3. Step 3: Cross multiply
    384,182.48x = 529,678.95 × 315,017.12
  4. Step 4: Simplify right side
    384,182.48x = 166,857,937,175.02
  5. Step 5: Solve for x
    x = 166,857,937,175.02/384,182.48
  6. Step 6: Final answer
    x = 434,319.49

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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.