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Finding the Fourth Proportional to 387,292.50, 534,460.32 and 212,864.94

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Solution

The fourth proportional to 387,292.50, 534,460.32 and 212,864.94 is: 293,751.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,292.50 : 534,460.32 = 212,864.94 : x
  2. Step 2: Convert to fraction form
    387,292.50/534,460.32 = 212,864.94/x
  3. Step 3: Cross multiply
    387,292.50x = 534,460.32 × 212,864.94
  4. Step 4: Simplify right side
    387,292.50x = 113,767,863,949.18
  5. Step 5: Solve for x
    x = 113,767,863,949.18/387,292.50
  6. Step 6: Final answer
    x = 293,751.79

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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.