Home / 387,347.50-534,566.82-217,581.76

Finding the Fourth Proportional to 387,347.50, 534,566.82 and 217,581.76

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Solution

The fourth proportional to 387,347.50, 534,566.82 and 217,581.76 is: 300,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,347.50 : 534,566.82 = 217,581.76 : x
  2. Step 2: Convert to fraction form
    387,347.50/534,566.82 = 217,581.76/x
  3. Step 3: Cross multiply
    387,347.50x = 534,566.82 × 217,581.76
  4. Step 4: Simplify right side
    387,347.50x = 116,311,989,533.20
  5. Step 5: Solve for x
    x = 116,311,989,533.20/387,347.50
  6. Step 6: Final answer
    x = 300,278.15

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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.