Home / 387,234.08-534,385.16-215,152.28

Finding the Fourth Proportional to 387,234.08, 534,385.16 and 215,152.28

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Solution

The fourth proportional to 387,234.08, 534,385.16 and 215,152.28 is: 296,911.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,234.08 : 534,385.16 = 215,152.28 : x
  2. Step 2: Convert to fraction form
    387,234.08/534,385.16 = 215,152.28/x
  3. Step 3: Cross multiply
    387,234.08x = 534,385.16 × 215,152.28
  4. Step 4: Simplify right side
    387,234.08x = 114,974,185,572.17
  5. Step 5: Solve for x
    x = 114,974,185,572.17/387,234.08
  6. Step 6: Final answer
    x = 296,911.33

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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.